| 释义 |
disco-|dɪskəʊ|
combining form of Gr. δίσκος quoit, disc, occurring in numerous scientific terms; as discoˈblastic a. Embryol. [Gr. βλαστός germ], (of an ovum), having discoidal segmentation of the formative yolk (Syd. Soc. Lex.): discoˈmorula, Embryol., the morula or ‘mulberry-mass’ resulting from the partial and discoidal segmentation of the formative yolk of a meroblastic egg: it develops from earlier stages called discomoˈnerula and discoˈcytula, and proceeds to develop into the forms called discoˈblastula and discoˈgastrula: see quots. and cytula, etc. ˈdiscocarp Bot. [ad. mod.L. discocarpium, f. Gr. καρπός fruit], (a) a fruit consisting of a number of achenes within a hollow receptacle, as in the rose; (b) the disc-like hymenium or fructification of discomycetous fungi and gymnocarpous lichens; hence discoˈcarpous a., relating to, or having, a discocarp. discoˈcephalous a. Zool. [Gr. κεϕαλή head], belonging to the suborder Discocephali of fishes, having a sucking-disc on the head. discoˈdactyl(e, discoˈdactylous adjs. Zool. [Gr. δάκτυλος finger], having toes dilated at the end so as to form a disc, as a tree-frog. discoˈglossid a. and n. Zool. [Gr. γλῶσσα tongue], belonging to, or a member of, the family Discoglossidæ of toad-like batrachians; also discoglossoid a. discoheˈxaster Zool., in sponges, a six-rayed spicule (hexaster) with the rays ending in discs. discomeˈdusan a. and n. Zool., belonging to, or a member of, the order Discomedusæ of acalephs or jelly-fishes, having an umbrellar disc; also discomeˈdusoid a. discomyˈcetous a. Bot., belonging to the order Discomycetes of Fungi, having a disc-shaped hymenium or discocarp. discoplaˈcental, discoplacenˈtalian adjs. Zool., belonging to the section Discoplacentalia of mammals, having a disc-shaped placenta. ˈdiscoplasm, see quot. 1913. ‖ discoˈpodium Bot., ‘the foot or stalk on which some kinds of discs are elevated’ (Treas. Bot. 1866). diˈscopodous a. Zool., having the foot shaped as a disc; belonging to the section Discopoda of Gastropods. discoˈstomatous a. Zool. [Gr. στόµα mouth], pertaining to or belonging to the class Discostomata of Protozoa (in Saville Kent's system), containing the sponges and collar-bearing monads. ˈdiscotriæne, see quot. 1888.
1883Syd. Soc. Lex, *Discoblastula, Häckel's term for the small fluid-containing cavity lying between the discomorula and the nutritive yolk of a meroblastic ovum.
Ibid., *Discocarp, a collection of fruits in a hollow receptacle, as in the rose. [1866Treas. Bot., Discocarpium.]
1887Garnsey & Balfour tr. De Bary's Fungi v. 198 Of gymnocarpous and *discocarpous forms.
1883Syd. Soc. Lex., *Discogastrula, Häckel's term for that form of gastrula which develops from a disc situated on a mass of food yolk, as in Ganoid fishes.
1888Athenæum 3 Mar. 279/2 Evidence of the pelobatoid rather than the *discoglossid affinities of the..genus.
1883Syd. Soc. Lex., *Discomorula, Häckel's term for the disc of cells which, during the segmentation of the impregnated meroblastic ovum, covers the nutritive vitellus as with a hood.
1879tr. Haeckel's Evol. Man II. xix. 168 All other *Discoplacental Animals.
1881Standard 23 June 5/2 The *discoplacentalian mammals.
1900W. Myers tr. Ehrlich & Lazarus's Histol. Blood 51 The *discoplasm loses its power of retaining the hæmoglobin, and gives it up to the blood plasma in ever increasing quantity. 1913Dorland Med. Dict. (ed. 7), Discoplasm, the structural part of a red blood-corpuscle.
1888Sollas in Challenger Rep. XXV. p. lvii, Varieties of the Triæne... *Discotriæne... The cladome is a disc in which separate cladi are not distinguishable; and the axial rods representing them extend but a short distance from the cladal origin. Ibid., The discotriæne combines in itself the characters of the desma and the ordinary spicule. |