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单词 diphy-
释义

diphy-comb. form

Stress is usually determined by a subsequent element and vowels may be reduced accordingly.
Etymology: < Greek διϕυ- < διϕυής, of double nature or form, double, bipartite.
A frequent formative of modern scientific words.
ˈdiphycerc n.
Brit. /ˈdɪfᵻsəːk/
,
U.S. /ˈdɪfᵻˌsərk/
[Greek κέρκος tail] Ichthyology a diphycercal fish.
ΚΠ
1883 New Sydenham Soc. Lexicon Diphycerc, a fish with the form of tail called Diphycercal.
diphycercal adj.
Brit. /ˌdɪfᵻˈsəːkl/
,
U.S. /ˌdɪfᵻˈsərk(ə)l/
having the tail divided into two equal halves by the caudal spine.
ΚΠ
1870 G. Rolleston Forms Animal Life Introd. 70 A true diphycercal tail is finally produced in the Acanthopteri.
1871 T. H. Huxley Man. Anat. Vertebrated Animals 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.
ˈdiphycercy n.
Brit. /ˈdɪfᵻsəːsi/
,
U.S. /ˈdɪfᵻˌsərsi/
diphycercal condition.
ˈdiphyid n.
Brit. /ˈdɪfɪɪd/
,
U.S. /ˈdɪfiᵻd/
Zoology 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.
ΚΠ
1884 A. Sedgwick & F. G. Heathcote tr. C. Claus Elem. Text-bk. Zool.: Protozoa to Insecta 250 These groups of individuals may in some diphyids become free and assume a separate existence as Eudoxia.
ˈdiphyodont adj.
Brit. /ˈdɪfɪədɒnt/
,
U.S. /ˈdɪfiəˌdɑnt/
,
/daɪˈfaɪəˌdɑnt/
[Greek 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.
ΚΠ
1854 R. Owen in Circle of Sci. (c1865) II. 100/1 The diphyodonts..generate two sets of teeth.
1854 R. Owen in Circle of Sci. (c1865) II. 100/1 The diphyodont mammalia.
1883 W. Flower in Glasgow Weekly Herald 14 July 8/1 Teeth..of the simple homodont and diphyodont type.
diphyˈzooid n.
Brit. /ˌdɪfᵻˈzuːɔɪd/
,
/ˌdɪfᵻˈzəʊɔɪd/
,
/ˌdɪfᵻˈzuːɪd/
,
U.S. /ˌdɪfᵻˈzoʊˌɔɪd/
,
/ˌdɪfᵻˈzuˌɔɪd/
(also diphyozooid) Zoology a free-swimming organism consisting of a group of zooids detached from a colony of Hydrozoa of the order Siphonophora.
ΚΠ
1861 J. R. Greene Man. Animal Kingdom II. 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’.
1877 T. H. Huxley Man. Anat. Invertebrated Animals 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.
This entry has not yet been fully updated (first published 1896; most recently modified version published online March 2022).
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