| slovo | definícia |
discoid
(encz) | discoid,kotoučovitý adj: Zdeněk Brož |
discoid
(encz) | discoid,terčovitý adj: Zdeněk Brož |
Discoid
(gcide) | Discoid \Dis"coid\, n.
Anything having the form of a discus or disk; particularly, a
discoid shell.
[1913 Webster] |
Discoid
(gcide) | Discoid \Dis"coid\, a. [Gr. ? quoit-shaped, ? a round plate,
quoit + e'i^dos form, shape: cf. F. disco["i]de. See Disk.]
Having the form of a disk, as those univalve shells which
have the whorls in one plane, so as to form a disk, as the
pearly nautilus.
[1913 Webster]
Discoid flower (Bot.), a compound flower, consisting of
tubular florets only, as a tansy, lacking the rays which
are seen in the daisy and sunflower.
[1913 Webster] |
discoid
(wn) | discoid
adj 1: having a flat circular shape [syn: discoid,
discoidal, disklike, disclike, disk-shaped,
disc-shaped] |
| | podobné slovo | definícia |
discoid
(encz) | discoid,kotoučovitý adj: Zdeněk Broždiscoid,terčovitý adj: Zdeněk Brož |
discoid lupus erythematosus
(encz) | discoid lupus erythematosus, n: |
discoidal
(encz) | discoidal,diskoidní Zdeněk Broždiscoidal,diskovitý adj: Zdeněk Broždiscoidal,kotoučovitý adj: Zdeněk Brož |
Dictyostelium discoideum
(gcide) | slime mold \slime mold\, slime mould \slime mould\n.
1. An unusual fungus-like protist of the phylum Myxomycota or
the class Myxomycetes, having a stage of growth in which
it comprises a naked noncellular multinucleate mass of
creeping protoplasm having characteristics of both plants
and animals; it also has a propagative phase in which it
develops fruiting bodies bearing spores; it is sometimes
classified as a protist. It is called also {acellular
slime mold}. [WordNet 1.5 +PJC]
2. Any of several remarkable amoebalike organisms of the
phylum Acrasiomycota, mostly terrestrial, having a
fruiting phase resembling that of the {acellular slime
molds}, but being cellular and nucleate throughout their
life cycle; called also cellular slime mold. The most
studied species is Dictyostelium discoideum. In their
feeding phase, they live like amoebae as individual cells,
engulfing bacteria as a prime food source. When the food
source diminishes, they begin to aggregate, swarming
together to form clumps which may move toward heat and
light, so as to reach the surface of the ground; they then
differentiate into a form with spores contained within a
sporangium resting on a stalk. When the spores are carried
to another location with adequate food supplies, the
spores may germinate to resume the life cycle. The phase
of aggregation appears to be initiated by release of
cyclic AMP, serving as a signal between the individual
cells. The formation of the fruiting body has some
similarities to differentiation in multicellular
organisms, but the mechanisms are still under study. Some
biologists object to the classification of Dictyostelium
as a slime mold, as it is neither a mold nor slimy.
[PJC] |
Discoid flower
(gcide) | Discoid \Dis"coid\, a. [Gr. ? quoit-shaped, ? a round plate,
quoit + e'i^dos form, shape: cf. F. disco["i]de. See Disk.]
Having the form of a disk, as those univalve shells which
have the whorls in one plane, so as to form a disk, as the
pearly nautilus.
[1913 Webster]
Discoid flower (Bot.), a compound flower, consisting of
tubular florets only, as a tansy, lacking the rays which
are seen in the daisy and sunflower.
[1913 Webster] |
Discoidal
(gcide) | Discoidal \Dis*coid"al\, a. [Cf. F. disco["i]dal.]
Disk-shaped; discoid.
[1913 Webster] |
Metadiscoidal
(gcide) | Metadiscoidal \Met`a*dis*coid"al\, a. [Meta- + discoidal.]
(Anat.)
Discoidal by derivation; -- applied especially to the
placenta of man and apes, because it is supposed to have been
derived from a diffused placenta.
[1913 Webster] |
discoid
(wn) | discoid
adj 1: having a flat circular shape [syn: discoid,
discoidal, disklike, disclike, disk-shaped,
disc-shaped] |
discoid lupus erythematosus
(wn) | discoid lupus erythematosus
n 1: a chronic skin disease occurring primarily in women between
the ages of 20 and 40; characterized by an eruption of red
lesions over the cheeks and bridge of the nose [syn:
discoid lupus erythematosus, DLE] |
discoidal
(wn) | discoidal
adj 1: having a flat circular shape [syn: discoid,
discoidal, disklike, disclike, disk-shaped,
disc-shaped] |
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