polyphyodontadj.

Brit.

/ˌpɒlɪˈfʌɪə(ʊ)dɒnt/, U.S.

/ˌpɑliˈfaɪəˌdɑnt/

Origin: A borrowing from German. Etymon: German polyphyodont.

Etymology: < German polyphyodont (1878 in the passage translated in quot. 1878) < poly- poly- comb. form + ancient Greek -ϕυής ( < the stem of ϕύειν to produce: see physis n.) + German -odont -odont comb. form. Compare earlier monophyodont adj., diphyodont adj. at diphy- comb. form .

Zoology.

Of a vertebrate: having teeth that are continually being lost and replaced. Also: characterized by such teeth.

ΘΚΠ

the world > life > the body > digestive or excretive organs > digestive organs > mouth > types or spec. teeth > [adjective] > of successive sets

polyphyodont1878

1878 F. J. Bell & E. R. Lankester tr. C. Gegenbaur Elements Compar. Anat. 552 The change of teeth in the Mammalia may be regarded as a process which has been developed from a polyphyodont condition.

1898 Amer. Naturalist 32 314 All living mammals are diphyodont and sprang from polyphyodont ancestors.

1958 W. E. Swinton Fossil Amphibians & Reptiles (ed. 2) vii. 37 In reptiles the succession of teeth is continuous, new teeth replacing discarded ones—the polyphyodont condition.

1974 D. Webster & M. Webster Compar. Vertebr. Morphol. xiv. 332 Throughout life teeth are continually lost and replaced (polyphyodont dentition).

1994 Developmental Biol. 165 1/1 We examine the effect of unilateral denervation on the formation of tooth germs in the lower jaw of a polyphyodont teleost.

This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).

单词	polyphyodont
释义	polyphyodontadj. Brit. /ˌpɒlɪˈfʌɪə(ʊ)dɒnt/, U.S. /ˌpɑliˈfaɪəˌdɑnt/ Origin: A borrowing from German. Etymon: German polyphyodont. Etymology: < German polyphyodont (1878 in the passage translated in quot. 1878) < poly- poly- comb. form + ancient Greek -ϕυής ( < the stem of ϕύειν to produce: see physis n.) + German -odont -odont comb. form. Compare earlier monophyodont adj., diphyodont adj. at diphy- comb. form . Zoology. Of a vertebrate: having teeth that are continually being lost and replaced. Also: characterized by such teeth. ΘΚΠ the world > life > the body > digestive or excretive organs > digestive organs > mouth > types or spec. teeth > [adjective] > of successive sets polyphyodont1878 1878 F. J. Bell & E. R. Lankester tr. C. Gegenbaur Elements Compar. Anat. 552 The change of teeth in the Mammalia may be regarded as a process which has been developed from a polyphyodont condition. 1898 Amer. Naturalist 32 314 All living mammals are diphyodont and sprang from polyphyodont ancestors. 1958 W. E. Swinton Fossil Amphibians & Reptiles (ed. 2) vii. 37 In reptiles the succession of teeth is continuous, new teeth replacing discarded ones—the polyphyodont condition. 1974 D. Webster & M. Webster Compar. Vertebr. Morphol. xiv. 332 Throughout life teeth are continually lost and replaced (polyphyodont dentition). 1994 Developmental Biol. 165 1/1 We examine the effect of unilateral denervation on the formation of tooth germs in the lower jaw of a polyphyodont teleost. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). < adj.1878
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