| slovo | definícia |
valence
(encz) | valence,mocenství n: Zdeněk Brož |
valence
(encz) | valence,valence n: Zdeněk Brož |
valence
(czen) | valence,valencen: Zdeněk Brož |
valence
(czen) | valence,valencespl. Zdeněk Brož |
valence
(czen) | valence,valencyn: Zdeněk Brož |
valence
(gcide) | Valance \Val"ance\, n. [Perhaps fr. OF. avalant descending,
hanging down, p. pr. of avaler to go down, let down, descend
(cf. Avalanche); but probably from the town of Valence in
France.]
[1913 Webster]
1. Hanging drapery for a bed, couch, window, or the like,
especially that which hangs around a bedstead, from the
bed to the floor. [Written also valence.]
[1913 Webster]
Valance of Venice gold in needlework. --Shak.
[1913 Webster]
2. The drooping edging of the lid of a trunk, which covers
the joint when the lid is closed.
[1913 Webster] |
Valence
(gcide) | Valence \Va"lence\, n. [From L. valens, -entis, p. pr. of valere
to have power, to be strong. See Valiant.] (Chem.)
The degree of combining power of an atom (or radical) as
shown by the number of atoms of hydrogen (or of other monads,
as chlorine, sodium, etc.) with which it will combine, or for
which it can be substituted, or with which it can be
compared; thus, an atom of hydrogen is a monad, and has a
valence of one; the atoms of oxygen, nitrogen, and carbon are
respectively dyads, triads, and tetrads, and have a valence
respectively of two, three, and four.
[1913 Webster]
Note: The valence of certain elements varies in different
compounds. Valence in degree may extend as high as
seven or eight, as in the cases of iodine and osmium
respectively. The doctrine of valence has been of
fundamental importance in distinguishing the
equivalence from the atomic weight, and is an essential
factor in explaining the chemical structures of
compounds.
[1913 Webster] |
valence
(wn) | valence
n 1: (biology) a relative capacity to unite or react or interact
as with antigens or a biological substrate [syn: valence,
valency]
2: (chemistry) a property of atoms or radicals; their combining
power given in terms of the number of hydrogen atoms (or the
equivalent) [syn: valence, valency] |
| | podobné slovo | definícia |
equivalence
(mass) | equivalence
- zhoda |
prevalence
(mass) | prevalence
- rozmach |
ambivalence
(encz) | ambivalence,kolísání Martin M.ambivalence,rozpolcenost Martin M.ambivalence,rozpornost Martin M. |
certainty equivalence
(encz) | certainty equivalence,jistota ekvivalence [eko.] RNDr. Pavel Piskač |
covalence
(encz) | covalence,kovalence Zdeněk Brož |
ecological valence
(encz) | ecological valence,ekologická valence [eko.] RNDr. Pavel Piskač |
equivalence
(encz) | equivalence,rovnocennost n: VP |
equivalence class
(encz) | equivalence class,třída ekvivalence n: [mat.] |
mass-energy equivalence
(encz) | mass-energy equivalence, n: |
nonequivalence
(encz) | nonequivalence, n: |
polyvalence
(encz) | polyvalence, n: |
prevalence
(encz) | prevalence,rozmach n: Zdeněk Brož |
principle of equivalence
(encz) | principle of equivalence, n: |
ricardian equivalence theorum
(encz) | Ricardian Equivalence Theorum,teorém Ricardovské
ekvivalence [eko.] RNDr. Pavel Piskač |
valence electron
(encz) | valence electron,valenční elektron n: Vašek Stodůlka |
valences
(encz) | valences,valence pl. Zdeněk Brož |
ekologická valence
(czen) | ekologická valence,ecological valence[eko.] RNDr. Pavel Piskač |
ekvivalence
(czen) | ekvivalence,equivalencyn: Zdeněk Brožekvivalence,iff[mat.] [tech.] if and only if v.martin |
jistota ekvivalence
(czen) | jistota ekvivalence,certainty equivalence[eko.] RNDr. Pavel Piskač |
kovalence
(czen) | kovalence,covalence Zdeněk Brož |
saprobní valence
(czen) | saprobní valence,saprobic valency[eko.] RNDr. Pavel Piskač |
teorém ricardovské ekvivalence
(czen) | teorém Ricardovské ekvivalence,Ricardian Equivalence
Theorum[eko.] RNDr. Pavel Piskač |
třída ekvivalence
(czen) | třída ekvivalence,equivalence classn: [mat.] |
ambivalence
(gcide) | ambivalence \ambivalence\, ambivalency \ambivalency\n.
1. mixed feelings or emotions; uncertainty or vacillation in
making a choice.
[WordNet 1.5 +PJC]
2. (Psychol.) the simultaneous existence within a person of
both positive and negative feelings toward another person
or action, or toward an object (as of attraction and
revulsion), resulting in internal conflict.
[PJC] |
Equivalence
(gcide) | Equivalence \E*quiv"a*lence\, v. t.
To be equivalent or equal to; to counterbalance. [R.] --Sir
T. Browne.
[1913 Webster]Equivalence \E*quiv"a*lence\ ([-e]*kw[i^]v"[.a]*lens), n. [Cf.
F. ['e]quivalence, LL. aequivalentia.]
1. The condition of being equivalent or equal; equality of
worth, value, signification, or force; as, an equivalence
of definitions.
[1913 Webster]
2. Equal power or force; equivalent amount.
[1913 Webster]
3. (Chem.)
(a) The quantity of the combining power of an atom,
expressed in hydrogen units; the number of hydrogen
atoms can combine with, or be exchanged for; valency.
See Valence.
(b) The degree of combining power as determined by
relative weight. See Equivalent, n., 2. [R.]
[1913 Webster] |
Imprevalence
(gcide) | Imprevalence \Im*prev"a*lence\, Imprevalency \Im*prev"a*len*cy\,
n.
Lack of prevalence. [Obs.]
[1913 Webster] |
Multivalence
(gcide) | Multivalence \Mul*tiv"a*lence\, n. (Chem.)
Quality, state, or degree, of a multivalent element, atom, or
radical.
[1913 Webster] |
Prevalence
(gcide) | Prevalence \Prev"a*lence\, n. [L. praevalentia: cf. F.
pr['e]valence. See Prevail.]
The quality or condition of being prevalent; superior
strength, force, or influence; general existence, reception,
or practice; wide extension; as, the prevalence of virtue, of
a fashion, or of a disease; the prevalence of a rumor.
[1913 Webster]
The duke better knew what kind of argument were of
prevalence with him. --Clarendon.
[1913 Webster] |
Quadrivalence
(gcide) | Quadrivalence \Quad*riv"a*lence\, n. (Chem.)
The quality or state of being quadrivalent; tetravalence.
[1913 Webster] |
Quantivalence
(gcide) | Quantivalence \Quan*tiv"a*lence\, n. [L. quantus how much + E.
valence.] (Chem.)
Valence. [Archaic]
[1913 Webster] |
Tetravalence
(gcide) | Tetravalence \Te*trav"a*lence\, n. (Chem.)
The quality or state of being tetravalent; quadrivalence.
[1913 Webster] |
Trivalence
(gcide) | Trivalence \Triv"a*lence\, n. (Chem.)
The quality or state of being trivalent.
[1913 Webster] |
Univalence
(gcide) | Univalence \U*niv"a*lence\, n. (Chem.)
The quality or state of being univalent.
[1913 Webster] |
Valence
(gcide) | Valance \Val"ance\, n. [Perhaps fr. OF. avalant descending,
hanging down, p. pr. of avaler to go down, let down, descend
(cf. Avalanche); but probably from the town of Valence in
France.]
[1913 Webster]
1. Hanging drapery for a bed, couch, window, or the like,
especially that which hangs around a bedstead, from the
bed to the floor. [Written also valence.]
[1913 Webster]
Valance of Venice gold in needlework. --Shak.
[1913 Webster]
2. The drooping edging of the lid of a trunk, which covers
the joint when the lid is closed.
[1913 Webster]Valence \Va"lence\, n. [From L. valens, -entis, p. pr. of valere
to have power, to be strong. See Valiant.] (Chem.)
The degree of combining power of an atom (or radical) as
shown by the number of atoms of hydrogen (or of other monads,
as chlorine, sodium, etc.) with which it will combine, or for
which it can be substituted, or with which it can be
compared; thus, an atom of hydrogen is a monad, and has a
valence of one; the atoms of oxygen, nitrogen, and carbon are
respectively dyads, triads, and tetrads, and have a valence
respectively of two, three, and four.
[1913 Webster]
Note: The valence of certain elements varies in different
compounds. Valence in degree may extend as high as
seven or eight, as in the cases of iodine and osmium
respectively. The doctrine of valence has been of
fundamental importance in distinguishing the
equivalence from the atomic weight, and is an essential
factor in explaining the chemical structures of
compounds.
[1913 Webster] |
ambivalence
(wn) | ambivalence
n 1: mixed feelings or emotions [syn: ambivalence,
ambivalency] |
covalence
(wn) | covalence
n 1: valence characterized by the sharing of electrons in a
chemical compound; the number of pairs of electrons an atom
can share [syn: covalence, covalency] |
equivalence
(wn) | equivalence
n 1: a state of being essentially equal or equivalent; equally
balanced; "on a par with the best" [syn: equality,
equivalence, equation, par]
2: essential equality and interchangeability [ant:
nonequivalence]
3: qualities that are comparable; "no comparison between the two
books"; "beyond compare" [syn: comparison, compare,
equivalence, comparability] |
mass-energy equivalence
(wn) | mass-energy equivalence
n 1: (physics) the principle that a measured quantity of mass is
equivalent (according to relativity theory) to a measured
quantity of energy |
multivalence
(wn) | multivalence
n 1: (chemistry) the state of having a valence greater than two
[syn: polyvalence, polyvalency, multivalence,
multivalency] |
nonequivalence
(wn) | nonequivalence
n 1: not interchangeable [ant: equivalence] |
polyvalence
(wn) | polyvalence
n 1: (chemistry) the state of having a valence greater than two
[syn: polyvalence, polyvalency, multivalence,
multivalency]
2: (toxicology) the state of being capable of counteracting more
than one toxin or antigen or kind of microorganism [syn:
polyvalence, polyvalency] |
prevalence
(wn) | prevalence
n 1: the quality of prevailing generally; being widespread; "he
was surprised by the prevalence of optimism about the
future"
2: (epidemiology) the ratio (for a given time period) of the
number of occurrences of a disease or event to the number of
units at risk in the population
3: a superiority in numbers or amount; "a preponderance of
evidence against the defendant" [syn: preponderance,
prevalence] |
principle of equivalence
(wn) | principle of equivalence
n 1: (physics) the principle that an observer has no way of
distinguishing whether his laboratory is in a uniform
gravitational field or is in an accelerated frame of
reference |
valence electron
(wn) | valence electron
n 1: an electron in the outer shell of an atom which can combine
with other atoms to form molecules |
equivalence class
(foldoc) | equivalence class
An equivalence class is a subset whose elements
are related to each other by an equivalence relation. The
equivalence classes of a set under some relation form a
partition of that set (i.e. any two are either equal or
disjoint and every element of the set is in some class).
(1996-05-13)
|
equivalence class partitioning
(foldoc) | equivalence class partitioning
equivalence partitioning
A software testing technique that involves
identifying a small set of representative input values that
invoke as many different input conditions as possible.
For example, for binary search the following partitions
exist: inputs that do or do not conform to pre-conditions,
Inputs where the key element is or is not a member of the
array. One can combine these into finer partitions. One can
also pick specific conditions of the array, e.g. a single
value, even or odd number of elements. One should look at
boundary conditions, e.g. inputs where the key element is
the first or last element in the array.
(2004-01-18)
|
equivalence partitioning
(foldoc) | equivalence class partitioning
equivalence partitioning
A software testing technique that involves
identifying a small set of representative input values that
invoke as many different input conditions as possible.
For example, for binary search the following partitions
exist: inputs that do or do not conform to pre-conditions,
Inputs where the key element is or is not a member of the
array. One can combine these into finer partitions. One can
also pick specific conditions of the array, e.g. a single
value, even or odd number of elements. One should look at
boundary conditions, e.g. inputs where the key element is
the first or last element in the array.
(2004-01-18)
|
equivalence relation
(foldoc) | equivalence relation
A relation R on a set including elements a, b,
c, which is reflexive (a R a), symmetric (a R b => b R a) and
transitive (a R b R c => a R c). An equivalence relation
defines an equivalence class.
See also partial equivalence relation.
(1996-05-13)
|
observational equivalence
(foldoc) | observational equivalence
Two terms M and N are observationally equivalent iff for all
contexts C[] where C[M] is a valid term, C[N] is also a valid
term with the same value.
|
partial equivalence relation
(foldoc) | partial equivalence relation
(PER) A relation R on a set S where R is symmetric (x R y => y
R x) and transitive (x R y R z => x R z) and where there may
exist elements in S for which the relation is not defined. A
PER is an equivalence relation on the subset for which it is
defined, i.e. it is also reflexive (x R x).
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