| 释义 |
diphy-
ad. Gr. διϕυ- from διϕυ-ής, of double nature or form, double, bipartite; a frequent formative of modern scientific words: as ˈdiphycerc Ichth. [Gr. κέρκ-ος tail], a diphycercal fish. diphycercal |dɪfɪˈsɜːkəl| a., having the tail divided into two equal halves by the caudal spine. ˈdiphycercy, diphycercal condition. ˈdiphyid Zool., a member of the Diphyidæ, a family of Hydrozoa, having a pair of swimming-bells opposite each other on the upper part of the stem. ˈdiphyodont a., [Gr. ὀδοντ- tooth], having two distinct sets of teeth; consisting (as teeth) of two sets: as in the deciduous and permanent teeth of mammals; as n. a diphyodont mammal. diphyˈzooid, diphyo- Zool., a free-swimming organism consisting of a group of zooids detached from a colony of Hydrozoa of the order Siphonophora.
1883Syd. Soc. Lex., *Diphycerc, a fish with the form of tail called Diphycercal.
1870Rolleston Anim. Life Introd. 70 A true *diphycercal tail is finally produced in the Acanthopteri. 1871Huxley Anat. Vert. Anim. i. 16 The extremity of the spine divides the caudal fin-rays into two nearly equal moieties, an upper and a lower, and the fish is said to be diphycercal.
1884Sedgwick tr. Claus' Zool. I. 250 These groups of individuals may in some *diphyids become free and assume a separate existence as Eudoxia.
1854Owen in Circ. Sc. (c 1865) II. 100/1 The *diphyodonts..generate two sets of teeth. Ibid., The diphyodont mammalia. 1883Flower in Glasgow Weekly Her. 14 July 8/1 Teeth..of the simple homodont and diphyodont type.
1861J. R. Greene Man. Anim. Kingd., Cœlent. 100 The same naturalist [Huxley] has proposed the distinctive term of ‘*Diphyozoöids’ for those singular detached reproductive portions of adult Calycophoridæ which received the name of ‘monogastric Diphydæ’. 1877Huxley Anat. Inv. Anim. iii. §3. 145 As they attain their full development, each set becomes detached, as a free-swimming complex Diphyzooid. In this condition they grow and alter their form and size so much that they were formerly regarded as distinct genera. |
