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11 definitions found
From The Collaborative International Dictionary of English v.0.44 : [ gcide ]
Brain \Brain\ (br[=a]n), n. [OE. brain, brein, AS. bragen,
br[ae]gen; akin to LG. br["a]gen, bregen, D. brein, and perh.
to Gr. bre`gma, brechmo`s, the upper part of head, if [beta]
= [phi]. [root]95.]
[1913 Webster]
1. (Anat.) The whitish mass of soft matter (the center of the
nervous system, and the seat of consciousness and
volition) which is inclosed in the cartilaginous or bony
cranium of vertebrate animals. It is simply the anterior
termination of the spinal cord, and is developed from
three embryonic vesicles, whose cavities are connected
with the central canal of the cord; the cavities of the
vesicles become the central cavities, or ventricles, and
the walls thicken unequally and become the three segments,
the fore-, mid-, and hind-brain.
[1913 Webster]
Note: In the brain of man the cerebral lobes, or largest part
of the forebrain, are enormously developed so as to
overhang the cerebellum, the great lobe of the
hindbrain, and completely cover the lobes of the
midbrain. The surface of the cerebrum is divided into
irregular ridges, or convolutions, separated by grooves
(the so-called fissures and sulci), and the two
hemispheres are connected at the bottom of the
longitudinal fissure by a great transverse band of
nervous matter, the corpus callosum, while the two
halves of the cerebellum are connected on the under
side of the brain by the bridge, or pons Varolii.
[1913 Webster]
2. (Zo["o]l.) The anterior or cephalic ganglion in insects
and other invertebrates.
[1913 Webster]
3. The organ or seat of intellect; hence, the understanding;
as, use your brains. `` My brain is too dull.'' --Sir W.
Scott.
[1913 Webster]
Note: In this sense, often used in the plural.
[1913 Webster]
4. The affections; fancy; imagination. [R.] --Shak.
[1913 Webster]
5. a very intelligent person. [informal]
[PJC]
6. the controlling electronic mechanism for a robot, guided
missile, computer, or other device exhibiting some degree
of self-regulation. [informal]
[PJC]
To have on the brain, to have constantly in one's thoughts,
as a sort of monomania. [Low]
no-brainer a decision requiring little or no thought; an
obvious choice. [slang]
[1913 Webster]
Brain box or Brain case, the bony or cartilaginous case
inclosing the brain.
Brain coral, Brain stone coral (Zo["o]l), a massive
reef-building coral having the surface covered by ridges
separated by furrows so as to resemble somewhat the
surface of the brain, esp. such corals of the genera
M[ae]andrina and Diploria.
Brain fag (Med.), brain weariness. See Cerebropathy.
Brain fever (Med.), fever in which the brain is specially
affected; any acute cerebral affection attended by fever.
Brain sand, calcareous matter found in the pineal gland.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.44 : [ gcide ]
Cerebropathy \Cer`e*brop"a*thy\, n. [Cerebrum + Gr. ?
suffering.] (Med.)
A hypochondriacal condition verging upon insanity, occurring
in those whose brains have been unduly taxed; -- called also
brain fag.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.44 : [ gcide ]
Fag \Fag\, v. t.
1. To tire by labor; to exhaust; as, he was almost fagged
out.
[1913 Webster]
2. Anything that fatigues. [R.]
[1913 Webster]
It is such a fag, I came back tired to death. --Miss
Austen.
[1913 Webster]
Brain fag. (Med.) See Cerebropathy.
[1913 Webster]
From Webster's Revised Unabridged Dictionary (1913) : [ web1913 ]
Fag \Fag\, v. t.
1. To tire by labor; to exhaust; as, he was almost fagged
out.
2. Anything that fatigues. [R.]
It is such a fag, I came back tired to death. --Miss
Austen.
Brain fag. (Med.) See Cerebropathy.
From Webster's Revised Unabridged Dictionary (1913) : [ web1913 ]
Brain \Brain\, n. [OE. brain, brein, AS. bragen, br[ae]gen; akin
to LG. br["a]gen, bregen, D. brein, and perh. to Gr. ?, the
upper part of head, if ? =?. [root]95.]
1. (Anat.) The whitish mass of soft matter (the center of the
nervous system, and the seat of consciousness and
volition) which is inclosed in the cartilaginous or bony
cranium of vertebrate animals. It is simply the anterior
termination of the spinal cord, and is developed from
three embryonic vesicles, whose cavities are connected
with the central canal of the cord; the cavities of the
vesicles become the central cavities, or ventricles, and
the walls thicken unequally and become the three segments,
the fore-, mid-, and hind-brain.
Note: In the brain of man the cerebral lobes, or largest part
of the forebrain, are enormously developed so as to
overhang the cerebellum, the great lobe of the
hindbrain, and completely cover the lobes of the
midbrain. The surface of the cerebrum is divided into
irregular ridges, or convolutions, separated by grooves
(the so-called fissures and sulci), and the two
hemispheres are connected at the bottom of the
longitudinal fissure by a great transverse band of
nervous matter, the corpus callosum, while the two
halves of the cerebellum are connected on the under
side of the brain by the bridge, or pons Varolii.
2. (Zo["o]l.) The anterior or cephalic ganglion in insects
and other invertebrates.
3. The organ or seat of intellect; hence, the understanding.
`` My brain is too dull.'' --Sir W. Scott.
Note: In this sense, often used in the plural.
4. The affections; fancy; imagination. [R.] --Shak.
To have on the brain, to have constantly in one's thoughts,
as a sort of monomania. [Low]
Brain box or case, the bony on cartilaginous case
inclosing the brain.
Brain coral, Brain stone coral (Zo["o]l), a massive
reef-building coral having the surface covered by ridges
separated by furrows so as to resemble somewhat the
surface of the brain, esp. such corals of the genera
M[ae]andrina and Diploria.
Brain fag (Med.), brain weariness. See Cerebropathy.
Brain fever (Med.), fever in which the brain is specially
affected; any acute cerebral affection attended by fever.
Brain sand, calcareous matter found in the pineal gland.
From Webster's Revised Unabridged Dictionary (1913) : [ web1913 ]
Cerebropathy \Cer`e*brop"a*thy\, n. [Cerebrum + Gr. ?
suffering.] (Med.)
A hypochondriacal condition verging upon insanity, occurring
in those whose brains have been unduly taxed; -- called also
brain fag.
From English Wiktionary: All languages (2023-07-27) : [ dictinfo.com:wikt-en-ALL-2023-07-27 ]
brain fag
n.
1 A condition to which male high school and college students are
prone consisting of difficulty in concentrating, mild forgetfulness, and
difficulty in maintaining a train of thought, arising from "too
much thinking". Physical symptoms can manifest as well.
2 cerebropathy
From English Wiktionary: English language only (2023-07-27) : [ dictinfo.com:wikt-en-en-2023-07-27 ]
brain fag
n.
1 A condition to which male high school and college students are
prone consisting of difficulty in concentrating, mild forgetfulness, and
difficulty in maintaining a train of thought, arising from "too
much thinking". Physical symptoms can manifest as well.
2 cerebropathy
From English Wiktionary: Western, Greek, and Slavonic languages only (2023-07-27) : [ dictinfo.com:wikt-en-Western_Greek_Slavonic-2023-07-27 ]
brain fag
n.
1 A condition to which male high school and college students are
prone consisting of difficulty in concentrating, mild forgetfulness, and
difficulty in maintaining a train of thought, arising from "too
much thinking". Physical symptoms can manifest as well.
2 cerebropathy
From English Wiktionary: Western languages only (2023-07-27) : [ dictinfo.com:wikt-en-Western-2023-07-27 ]
brain fag
n.
1 A condition to which male high school and college students are
prone consisting of difficulty in concentrating, mild forgetfulness, and
difficulty in maintaining a train of thought, arising from "too
much thinking". Physical symptoms can manifest as well.
2 cerebropathy
From XDICT the English-Chinese dictionary : [ xdict ]
n. 脑衰竭
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