| slovo | definícia |
helix
(encz) | helix,spirála n: Zdeněk Brož |
Helix
(gcide) | Helix \He"lix\, n.; pl. L. Helices, E. Helixes. [L. helix,
Gr. ?, ?, fr. ? to turn round; cf. L. volvere, and E. volute,
voluble.]
1. (Geom.) A nonplane curve whose tangents are all equally
inclined to a given plane. The common helix is the curve
formed by the thread of the ordinary screw. It is
distinguished from the spiral, all the convolutions of
which are in the plane.
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2. (Arch.) A caulicule or little volute under the abacus of
the Corinthian capital.
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3. (Anat.) The incurved margin or rim of the external ear.
See Illust. of Ear.
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4. (Zool.) A genus of land snails, including a large number
of species.
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Note: The genus originally included nearly all shells, but is
now greatly restricted. See Snail, Pulmonifera.
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helix
(wn) | helix
n 1: a curve that lies on the surface of a cylinder or cone and
cuts the element at a constant angle [syn: helix,
spiral]
2: a structure consisting of something wound in a continuous
series of loops; "a coil of rope" [syn: coil, spiral,
volute, whorl, helix]
3: type genus of the family Helicidae [syn: Helix, {genus
Helix}] |
helix
(foldoc) | Helix
A hardware description language from Silvar-Lisco.
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| | podobné slovo | definícia |
double helix
(encz) | double helix,dvojšroubovice n: Zdeněk Brož |
helix angle
(encz) | helix angle, n: |
Anthelix
(gcide) | Anthelix \Ant"he*lix\ ([a^]nt"h[-e]*l[i^]ks), n. (Anat.)
Same as Antihelix.
[1913 Webster] anthelminthic |
Antihelix
(gcide) | Antihelix \An`ti*he"lix\, n. (Anat.)
The curved elevation of the cartilage of the ear, within or
in front of the helix. See Ear.
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Hedera helix
(gcide) | Ivy \I"vy\, n.; pl. Ivies. [AS. [imac]fig; akin to OHG. ebawi,
ebah, G. epheu.] (Bot.)
A plant of the genus Hedera (Hedera helix), common in
Europe. Its leaves are evergreen, dark, smooth, shining, and
mostly five-pointed; the flowers yellowish and small; the
berries black or yellow. The stem clings to walls and trees
by rootlike fibers.
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Direct
The clasping ivy where to climb. --Milton.
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Ye myrtles brown, with ivy never sere. --Milton.
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American ivy. (Bot.) See Virginia creeper.
English ivy (Bot.), a popular name in America for the ivy
proper (Hedera helix).
German ivy (Bot.), a creeping plant, with smooth, succulent
stems, and fleshy, light-green leaves; a species of
Senecio (Senecio scandens).
Ground ivy. (Bot.) Gill (Nepeta Glechoma).
Ivy bush. (Bot.) See Mountain laurel, under Mountain.
Ivy owl (Zool.), the barn owl.
Ivy tod (Bot.), the ivy plant. --Tennyson.
Japanese ivy (Bot.), a climbing plant ({Ampelopsis
tricuspidata}), closely related to the Virginia creeper.
Poison ivy (Bot.), an American woody creeper ({Rhus
Toxicodendron}), with trifoliate leaves, and
greenish-white berries. It is exceedingly poisonous to the
touch for most persons.
To pipe in an ivy leaf, to console one's self as best one
can. [Obs.] --Chaucer.
West Indian ivy, a climbing plant of the genus
Marcgravia.
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Helix
(gcide) | Helix \He"lix\, n.; pl. L. Helices, E. Helixes. [L. helix,
Gr. ?, ?, fr. ? to turn round; cf. L. volvere, and E. volute,
voluble.]
1. (Geom.) A nonplane curve whose tangents are all equally
inclined to a given plane. The common helix is the curve
formed by the thread of the ordinary screw. It is
distinguished from the spiral, all the convolutions of
which are in the plane.
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2. (Arch.) A caulicule or little volute under the abacus of
the Corinthian capital.
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3. (Anat.) The incurved margin or rim of the external ear.
See Illust. of Ear.
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4. (Zool.) A genus of land snails, including a large number
of species.
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Note: The genus originally included nearly all shells, but is
now greatly restricted. See Snail, Pulmonifera.
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Helix pomatia
(gcide) | Edible \Ed"i*ble\, a. [L. edibilis, fr. edere to eat. See
Eat.]
Fit to be eaten as food; eatable; esculent; as, edible
fishes. --Bacon. -- n. Anything edible.
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Edible bird's nest. See Bird's nest, 2.
Edible crab (Zo["o]l.), any species of crab used as food,
esp. the American blue crab (Callinectes hastatus). See
Crab.
Edible frog (Zo["o]l.), the common European frog ({Rana
esculenta}), used as food.
Edible snail (Zo["o]l.), any snail used as food, esp.
Helix pomatia and H. aspersa of Europe.
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Helixes
(gcide) | Helix \He"lix\, n.; pl. L. Helices, E. Helixes. [L. helix,
Gr. ?, ?, fr. ? to turn round; cf. L. volvere, and E. volute,
voluble.]
1. (Geom.) A nonplane curve whose tangents are all equally
inclined to a given plane. The common helix is the curve
formed by the thread of the ordinary screw. It is
distinguished from the spiral, all the convolutions of
which are in the plane.
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2. (Arch.) A caulicule or little volute under the abacus of
the Corinthian capital.
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3. (Anat.) The incurved margin or rim of the external ear.
See Illust. of Ear.
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4. (Zool.) A genus of land snails, including a large number
of species.
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Note: The genus originally included nearly all shells, but is
now greatly restricted. See Snail, Pulmonifera.
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Medicago Helix
(gcide) | Snail \Snail\ (sn[=a]l), n. [OE. snaile, AS. sn[ae]gel, snegel,
sn[ae]gl; akin to G. schnecke, OHG. snecko, Dan. snegl, Icel.
snigill.]
1. (Zool.)
(a) Any one of numerous species of terrestrial
air-breathing gastropods belonging to the genus Helix
and many allied genera of the family Helicidae. They
are abundant in nearly all parts of the world except
the arctic regions, and feed almost entirely on
vegetation; a land snail.
(b) Any gastropod having a general resemblance to the true
snails, including fresh-water and marine species. See
Pond snail, under Pond, and Sea snail.
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2. Hence, a drone; a slow-moving person or thing.
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3. (Mech.) A spiral cam, or a flat piece of metal of spirally
curved outline, used for giving motion to, or changing the
position of, another part, as the hammer tail of a
striking clock.
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4. A tortoise; in ancient warfare, a movable roof or shed to
protect besiegers; a testudo. [Obs.]
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They had also all manner of gynes [engines] . . .
that needful is [in] taking or sieging of castle or
of city, as snails, that was naught else but hollow
pavises and targets, under the which men, when they
fought, were heled [protected], . . . as the snail
is in his house; therefore they cleped them snails.
--Vegetius
(Trans.).
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5. (Bot.) The pod of the sanil clover.
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Ear snail, Edible snail, Pond snail, etc. See under
Ear, Edible, etc.
Snail borer (Zool.), a boring univalve mollusk; a drill.
Snail clover (Bot.), a cloverlike plant ({Medicago
scuttellata}, also, Medicago Helix); -- so named from
its pods, which resemble the shells of snails; -- called
also snail trefoil, snail medic, and beehive.
Snail flower (Bot.), a leguminous plant ({Phaseolus
Caracalla}) having the keel of the carolla spirally coiled
like a snail shell.
Snail shell (Zool.), the shell of snail.
Snail trefoil. (Bot.) See Snail clover, above.
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Salix Helix
(gcide) | Helicin \Hel"i*cin\, n. (Chem.)
A glucoside obtained as a white crystalline substance by
partial oxidation of salicin, from a willow (Salix Helix of
Linn[ae]us.)
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double helix
(wn) | double helix
n 1: a pair of parallel helices intertwined about a common axis;
"the shape of the DNA molecule is a double helix" |
genus helix
(wn) | genus Helix
n 1: type genus of the family Helicidae [syn: Helix, {genus
Helix}] |
hedera helix
(wn) | Hedera helix
n 1: Old World vine with lobed evergreen leaves and black
berrylike fruits [syn: ivy, common ivy, English ivy,
Hedera helix] |
helix angle
(wn) | helix angle
n 1: the constant angle at which a helix cuts the elements of a
cylinder or cone |
helix aspersa
(wn) | Helix aspersa
n 1: serious garden pest having a brown shell with paler zigzag
markings; nearly cosmopolitan in distribution [syn: {brown
snail}, Helix aspersa] |
helix hortensis
(wn) | Helix hortensis
n 1: a kind of garden snail |
helix pomatia
(wn) | Helix pomatia
n 1: one of the chief edible snails [syn: edible snail, {Helix
pomatia}] |
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