| slovo | definícia |
hexad
(encz) | hexad, n: |
Hexad
(gcide) | Hexad \Hex"ad\, n. [L. hexas, hexadis, the number six, Gr. ?, ?,
fr. "e`x six.] (chem.)
An atom whose valence is six, and which can be theoretically
combined with, substituted for, or replaced by, six monad
atoms or radicals; as, sulphur is a hexad in sulphuric acid.
Also used as an adjective.
[1913 Webster] |
hexad
(wn) | hexad
n 1: the cardinal number that is the sum of five and one [syn:
six, 6, VI, sixer, sise, Captain Hicks, {half a
dozen}, sextet, sestet, sextuplet, hexad] |
| | podobné slovo | definícia |
hexadecimal
(mass) | hexadecimal
- hexadecimálny |
hexadecimálny
(msas) | hexadecimálny
- hexadecimal |
hexadecimálny formát
(msas) | hexadecimálny formát
- hex format |
hexadecimalny
(msasasci) | hexadecimalny
- hexadecimal |
hexadecimalny format
(msasasci) | hexadecimalny format
- hex format |
hexad
(encz) | hexad, n: |
hexadecanoic acid
(encz) | hexadecanoic acid, n: |
hexadecimal
(encz) | hexadecimal,hexadecimální Hynek Hankehexadecimal,šestnáctkové číslo Hynek Hankehexadecimal,šestnáctkový Hynek Hanke |
hexadecimal notation
(encz) | hexadecimal notation, n: |
hexadecimal number system
(encz) | hexadecimal number system, n: |
hexadecimal system
(encz) | hexadecimal system, n: |
hexadecimální
(czen) | hexadecimální,hexadj: Zdeněk Brožhexadecimální,hexadecimal Hynek Hanke |
Hexadactylous
(gcide) | Hexadactylous \Hex`a*dac"tyl*ous\, a. [Gr. ?; "e`x six + ?
finger: cf. F. hexadactyle.] (Zool.)
Having six fingers or toes.
[1913 Webster] |
Hexade
(gcide) | Hexade \Hex"ade\, n. [See Hexad.]
A series of six numbers.
[1913 Webster] |
Hexadecane
(gcide) | Hexadecane \Hex"a*dec`ane\, n. (Chem.)
See Hecdecane.
[1913 Webster]Hecdecane \Hec"de*cane\, n. [Gr. ? six + ? ten.] (Chem.)
A white, semisolid, spermaceti-like hydrocarbon, C16H34, of
the paraffin series, found dissolved as an important
ingredient of kerosene, and so called because each molecule
has sixteen atoms of carbon; -- called also hexadecane.
[1913 Webster] |
hexadecane
(gcide) | Hexadecane \Hex"a*dec`ane\, n. (Chem.)
See Hecdecane.
[1913 Webster]Hecdecane \Hec"de*cane\, n. [Gr. ? six + ? ten.] (Chem.)
A white, semisolid, spermaceti-like hydrocarbon, C16H34, of
the paraffin series, found dissolved as an important
ingredient of kerosene, and so called because each molecule
has sixteen atoms of carbon; -- called also hexadecane.
[1913 Webster] |
hexad
(wn) | hexad
n 1: the cardinal number that is the sum of five and one [syn:
six, 6, VI, sixer, sise, Captain Hicks, {half a
dozen}, sextet, sestet, sextuplet, hexad] |
hexadecanoic acid
(wn) | hexadecanoic acid
n 1: a saturated fatty acid that is the major fat in meat and
dairy products [syn: palmitic acid, hexadecanoic acid] |
hexadecimal
(wn) | hexadecimal
adj 1: of or pertaining to a number system having 16 as its base
[syn: hexadecimal, hex] |
hexadecimal digit
(wn) | hexadecimal digit
n 1: a digit from 0 to 15 in hexadecimal notation |
hexadecimal notation
(wn) | hexadecimal notation
n 1: any notation that uses 16 different characters [syn:
hexadecimal notation, sexadecimal notation] |
hexadecimal number system
(wn) | hexadecimal number system
n 1: a positional system of numeration that uses hexadecimal
digits and a radix of sixteen [syn: {hexadecimal number
system}, sexadecimal number system, hexadecimal system] |
hexadecimal system
(wn) | hexadecimal system
n 1: a positional system of numeration that uses hexadecimal
digits and a radix of sixteen [syn: {hexadecimal number
system}, sexadecimal number system, hexadecimal system] |
hexadrol
(wn) | Hexadrol
n 1: a corticosteroid drug (trade names Decadron or
Dexamethasone Intensol or Dexone or Hexadrol or Oradexon)
used to treat allergies or inflammation [syn:
dexamethasone, Decadron, Dexamethasone Intensol,
Dexone, Hexadrol, Oradexon] |
hexadecimal
(foldoc) | hexadecimal
sexadecimal
(Or "hex") Base 16. A number representation
using the digits 0-9, with their usual meaning, plus the
letters A-F (or a-f) to represent hexadecimal digits with
values of (decimal) 10 to 15. The right-most digit counts
ones, the next counts multiples of 16, then 16^2 = 256, etc.
For example, hexadecimal BEAD is decimal 48813:
digit weight value
B = 11 16^3 = 4096 11*4096 = 45056
E = 14 16^2 = 256 14* 256 = 3584
A = 10 16^1 = 16 10* 16 = 160
D = 13 16^0 = 1 13* 1 = 13
-----
BEAD = 48813
There are many conventions for distinguishing hexadecimal
numbers from decimal or other bases in programs. In C for
example, the prefix "0x" is used, e.g. 0x694A11.
Hexadecimal is more succinct than binary for representing
bit-masks, machines addresses, and other low-level constants
but it is still reasonably easy to split a hex number into
different bit positions, e.g. the top 16 bits of a 32-bit word
are the first four hex digits.
The term was coined in the early 1960s to replace earlier
"sexadecimal", which was too racy and amusing for stuffy
IBM, and later adopted by the rest of the industry.
Actually, neither term is etymologically pure. If we take
"binary" to be paradigmatic, the most etymologically correct
term for base ten, for example, is "denary", which comes from
"deni" (ten at a time, ten each), a Latin "distributive"
number; the corresponding term for base sixteen would be
something like "sendenary". "Decimal" is from an ordinal
number; the corresponding prefix for six would imply something
like "sextidecimal". The "sexa-" prefix is Latin but
incorrect in this context, and "hexa-" is Greek. The word
octal is similarly incorrect; a correct form would be
"octaval" (to go with decimal), or "octonary" (to go with
binary). If anyone ever implements a base three computer,
computer scientists will be faced with the unprecedented
dilemma of a choice between two *correct* forms; both
"ternary" and "trinary" have a claim to this throne.
[Jargon File]
(1996-03-09)
|
hexadecimal
(jargon) | hexadecimal
n.
Base 16. Coined in the early 1950s to replace earlier sexadecimal, which
was too racy and amusing for stuffy IBM, and later adopted by the rest of
the industry.
Actually, neither term is etymologically pure. If we take binary to be
paradigmatic, the most etymologically correct term for base 10, for
example, is ‘denary’, which comes from ‘deni’ (ten at a time, ten each), a
Latin distributive number; the corresponding term for base-16 would be
something like ‘sendenary’. “Decimal” comes from the combining root of
decem, Latin for 10. If wish to create a truly analogous word for base 16,
we should start with sedecim, Latin for 16. Ergo, sedecimal is the word
that would have been created by a Latin scholar. The ‘sexa-’ prefix is
Latin but incorrect in this context, and ‘hexa-’ is Greek. The word octal
is similarly incorrect; a correct form would be ‘octaval’ (to go with
decimal), or ‘octonary’ (to go with binary). If anyone ever implements a
base-3 computer, computer scientists will be faced with the unprecedented
dilemma of a choice between two correct forms; both ternary and trinary
have a claim to this throne.
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