| podobné slovo | definícia |
trisomy 21
(encz) | trisomy 21, n: |
délková jednotka 219
(czen) | délková jednotka 219,456 m,cablen: [lod.] Jiří Šmoldas |
21st
(gcide) | 21st \21st\ adj.
1. coming next after the twentieth in a series
Syn: twenty-first
[WordNet 1.5 +PJC] |
C10H21
(gcide) | Decyl \De"cyl\, n. [L. decem ten + -yl.] (Chem.)
A hydrocarbon radical, C10H21., never existing alone, but
regarded as the characteristic constituent of a number of
compounds of the paraffin series.
[1913 Webster] |
C10H21CO2H
(gcide) | Undecylic \Un`de*cyl"ic\, a. (Chem.)
Related to, derived from, or containing, the undecyl radical;
specifically, designating that member of the fatty acids
which corresponds to undecane, and is obtained as a white
crystalline substance, C10H21.CO2H.
[1913 Webster] |
C17H21NO4
(gcide) | Cocaine \Co"ca*ine\, n. (Chem.)
A powerful narcotic alkaloid, C17H21NO4, obtained from the
leaves of coca. It is a bitter, white, crystalline substance,
and is remarkable for producing local insensibility to pain.
It is classified as addictive and is not available in the U.
S. without a prescription, but is nevertheless one of the
most widespread illegal drugs of abuse. It is used in several
forms, including small pellets of free base, called crack.
Most of the cacaine illegally used in the U.S. is imported.
[1913 Webster +PJC] |
C18H21NO3
(gcide) | Codeine \Co"deine\ (k[=o]"d[=e]n or k[-o]*d[=e]"[i^]n), n. [Gr.
kw`deia poppy head: cf. F. cod['e]ine.] (Chem.)
One of the opium alkaloids; a white crystalline substance,
C18H21NO3, similar to and regarded as a derivative of
morphine, but much feebler in its action; -- called also
codeia.
[1913 Webster] |
C19H21NO3
(gcide) | Thebaine \The*ba"ine\, n. [So called from a kind of Egyptian
opium produced at Thebes.] (Chem.)
A poisonous alkaloid, C19H21NO3, found in opium in small
quantities, having a sharp, astringent taste, and a tetanic
action resembling that of strychnine.
[1913 Webster] |
C20H21N3O
(gcide) | Rosaniline \Ros*an"i*line\ (? or ?), n. [Rose + aniline.]
(Chem.)
A complex nitrogenous base, C20H21N3O, obtained by
oxidizing a mixture of aniline and toluidine, as a colorless
crystalline substance which forms red salts. These salts are
essential components of many of the socalled aniline dyes, as
fuchsine, aniline red, etc. By extension, any one of the
series of substances derived from, or related to, rosaniline
proper.
[1913 Webster] |
C21H20O2
(gcide) | tetrahydrocannabinol \tet`ra*hy`dro*can*nab"i*nol\
(t[e^]t`r[.a]*h[imac]`dr[-o]*k[a^]n*n[a^]b"[i^]n[add]l), n.
(Chem. & Med.)
A chemical substance (C21H20O2) which is produced by the
hemp plant (Cannabis sativa), and is the physiologically
active agent of dried preparations of that plant, called
variously marijuana, hashish, ganja, hemp, etc.; also called
THC. It causes the euphoric effect for which the
preparations are smoked or chewed. It is used in medicine in
a purified form as an antiemetic (an antinausea agent),
especially in conjunction with chemotherapy of cancer. It
occurs primarily as the [Delta]1-3,4-trans isomer, also
called [Delta]9-THC, with small amounts of the
[Delta]6-3,4-trans isomer detectable at about 1%. It is a
controlled substance, classified as a hallucinogen, and its
possession or distribution is illegal in almost all states of
the United States. --MI11
[PJC] |
C21H28O5
(gcide) | cortisone \cortisone\ n. (Chem.)
a corticosteroid hormone (C21H28O5) produced by the adrenal
cortex. It is used in medicine as an antiinflammatory agent.
[WordNet 1.5] |
C21H30O5
(gcide) | cortisol \cortisol\ n.
a steroid hormone (C21H30O5) active in carbohydrate and
protein metabolism; -- called also hydrocortisone. It is
used in medicine as an antiinflammatory agent
Syn: hydrocortisone.
[WordNet 1.5] |
C21H36N7O16P3S
(gcide) | coenzyme A \co*en"zyme A`\ (k[-o]*[e^]n"z[imac]m [=a]`),
(Biochem.)
a coenzyme (C21H36N7O16P3S) that participates in the
transfer of acetyl groups in biochemical reactions; --
abbreviated CoA. It contains adenosine, phosphate,
pantothenic acid and cysteamine groups. The acetyl group to
be transferred during biosynthesis is temporarily attached to
the free sulhydryl of the cysteamine group to form a
thioester, in which state it is called acetyl coenzyme A. The
strength of a preparation of coenzyme A may be expressed by
the Lippman unit; one milligram of CoA contains 413 Lippman
units.
[PJC] |
CH3CH210COOH
(gcide) | Lauric acid \Lauric acid\ (Chem.),
a white, crystalline substance, CH3.(CH2)10.COOH,
resembling palmitic acid, and obtained from the fruit of the
bay tree, and various other vegetable sources. The sodium
salt (sodium lauryl sulfate) is used as a detergent.
Syn: dodecanoic acid, laurostearic acid, dodecoic acid.
[1913 Webster + PJC] |
trisomy 21 syndrome
(gcide) | Down syndrome \Down" syn`drome\, Down's syndrome \Down's"
syn`drome\, n. (Med.)
A congenital disorder caused by an extra chromosome 21 in
some or all cells. It causes a variable number and degree of
abnormalities, including retarded growth, mental retardation,
a short nose, prominent epicanthic folds on the eyelids, a
protruding lower lip, and other physical features having
varying degrees of deviation from the normal. Called also
mongolism, trisomy-21 and trisomy 21 syndrome.
[PJC] |
trisomy-21
(gcide) | Down syndrome \Down" syn`drome\, Down's syndrome \Down's"
syn`drome\, n. (Med.)
A congenital disorder caused by an extra chromosome 21 in
some or all cells. It causes a variable number and degree of
abnormalities, including retarded growth, mental retardation,
a short nose, prominent epicanthic folds on the eyelids, a
protruding lower lip, and other physical features having
varying degrees of deviation from the normal. Called also
mongolism, trisomy-21 and trisomy 21 syndrome.
[PJC] |
21st
(wn) | 21st
adj 1: coming next after the twentieth in position [syn:
twenty-first, 21st] |
atomic number 21
(wn) | atomic number 21
n 1: a white trivalent metallic element; sometimes classified in
the rare earth group; occurs in the Scandinavian mineral
thortveitite [syn: scandium, Sc, atomic number 21] |
june 21
(wn) | June 21
n 1: June 21, when the sun is at its northernmost point [syn:
summer solstice, June 21, midsummer] [ant: {winter
solstice}] |
trisomy 21
(wn) | trisomy 21
n 1: a congenital disorder caused by having an extra 21st
chromosome; results in a flat face and short stature and
mental retardation [syn: mongolism, mongolianism,
Down's syndrome, Down syndrome, trisomy 21] |
alpha axp 21164
(foldoc) | Alpha AXP 21164
A 1 GIPS version of the DEC Alpha processor.
The first commercially available sequential 1 GIPS processor.
Announced 1994-09-7.
(http://digital.com/info/semiconductor/dsc-21164.html).
(1995-05-10)
|
dod-std-2167a
(foldoc) | DOD-STD-2167A
A DoD standard specifying the overall process
for the development and documentation of mission-critical
software systems.
(1996-05-28)
|
dod-std-2168
(foldoc) | DoD-STD-2168
A DoD standard for software quality assurance
procedures.
(1996-05-29)
|
mpeg-21
(foldoc) | MPEG-21
A {file
format} designed to merge very different things in one object,
so you can store interactive material in this format (audio,
video, questions, answers, overlays, non-linear order,
calculation from user inputs, etc.)
[Technical details?]
(2001-12-02)
|
rfc 1213
(foldoc) | RFC 1213
The RFC which definied the MIB II
Management Information Base.
(rfc:1213).
(1994-11-14)
|
rfc 1321
(foldoc) | RFC 1321
The RFC defining the {Message Digest
5} algorithm.
(rfc:1321).
(1996-08-04)
|
rfc 1521
(foldoc) | RFC 1521
An RFC defining {Multipurpose Internet
Mail Extensions} (MIME). This RFC has been obsoleted by
RFC 2045, RFC 2046, RFC 2047, RFC 2048, RFC 2049,
and BCP0013.
(rfc:1521).
(1997-11-23)
|
rfc 2131
(foldoc) | RFC 2131
The RFC defining DHCP. Obsoletes
RFC 1531.
(rfc:2131).
(1998-11-22)
|
rfc 2821
(foldoc) | RFC 2821
The RFC describing SMTP. RFC 2821
supersedes RFC 821.
(rfc:2821).
(2007-06-01)
|
rfc 4213
(foldoc) | RFC 4213
The RFC defining mechanisms for
transitioning to IPv6, such as dual-stack versus tunnelling.
(rfc:4213).
(2013-11-12)
|
rfc 821
(foldoc) | RFC 821
The original RFC defining SMTP.
Updated by RFC 2821.
(rfc:821).
(2007-06-01)
|
v.21
(foldoc) | V.21
An ITU-T modem protocol for 300
bps two-wire full-duplex communications using {Frequency
Shift Keying} modulation.
All modern modems support both V.21 and the close variant,
Bell 103.
(1996-07-22)
|
x.21
(foldoc) | X.21
A digital signaling interface
recommended by ITU-T that includes specifications for
DTE/DCE physical interface elements, alignment of {call
control} characters and error checking, elements of the call
control phase for circuit switched services, data transfer
at up to 2 Mbps, and test loops. 64 kbps is the most
commonly used transfer rate.
(2000-02-28)
|
x.214
(foldoc) | transport layer
host-host layer
ISO 8072
ISO 8073
layer 4
X.214
X.224
(Or "host-host layer") The middle layer in the
OSI seven layer model. The transport layer determines how
to use the network layer to provide a virtual error-free,
point to point connection so that host A can send messages to
host B and they will arrive un-corrupted and in the correct
order. It establishes and dissolves connections between
hosts. It is used by the session layer.
An example transport layer protocol is {Transmission Control
Protocol} (TCP).
OSI documents: ITU Rec. X.214 (ISO 8072), ITU Rec. X.224
(ISO 8073).
(1997-12-07)
|
x.215
(foldoc) | session layer
ISO 8326
ISO 8327
layer 5
X.215
X.225
The third highest protocol layer (layer 5) in the
OSI
seven layer model. The session layer uses the {transport
layer} to establish a connection between processes on
different hosts. It handles security and creation of the
session. It is used by the presentation layer.
Documents: ITU Rec. X.225 (ISO 8327), ITU Rec. X.215 (ISO
8326).
[Examples?]
(1997-12-07)
|
x.216
(foldoc) | presentation layer
ISO 8822
ISO 8823
layer 6
X.216
X.226
The second highest layer (layer 6) in the OSI
seven layer model. Performs functions such as text
compression, code or format conversion to try to smooth out
differences between hosts. Allows incompatible processes in
the application layer to communicate via the {session
layer}.
Documents: ITU Rec. X.226 (ISO 8823), ITU Rec. X.216 (ISO
8822).
(1996-07-20)
|
x.217
(foldoc) | Association Control Service Element
ACSE
ISO 8649
ISO 8650
X.217
X.227
(ACSE) The OSI method for establishing a call
between two application programs. ACSE checks the
identities and contexts of the application entities, and could
apply an authentication security check.
Documents: ITU Rec. X.227 (ISO 8650), X.217 (ISO 8649)
(1997-12-07)
|
x.219
(foldoc) | Remote Operations Service Element
ISO 9072
ROSE
X.219
X.229
(ROSE) A sub-layer of protocol layer six
(presentation layer) in the OSI seven layer model which
provides SASE for remote operations.
Documents: ITU Rec. X.229 (ISO 9072-2), ITU Rec. X.219
(ISO 9072-1).
(1997-12-07)
|
80211hr
(vera) | 80211HR
802.11 High Rate (IEEE, WLAN), "802.11/HR"
|