nepionicadj.

Brit.

/ˌniːpɪˈɒnɪk/, U.S.

/ˌnipiˈɑnɪk/

Forms: 1800s naepionic, 1800s– nepionic.

Origin: A borrowing from Greek, combined with an English element. Etymons: Greek νήπιος , embryonic adj.

Etymology: < ancient Greek νήπιος infant, child (of uncertain origin) + -onic (in embryonic adj.).

Biology.

Designating the early postembryonic stages of ontogeny, spec. the stage between the embryonic and the neanic; of, relating to, or at such a stage of development.Applied variously in different groups of organisms, but esp. to the earliest stage of shell growth in molluscs.

ΘΚΠ

the world > animals > family unit > [adjective] > young > larval > in the condition of

larval1864

nepionic1889

1889 A. Hyatt in Smithsonian Contrib. Knowl. 26 ii. 9 The first larval or næpionic stage of a Nautiloid was, therefore, represented by the apex of the conch in that order.

1898 A. S. Packard Text-bk. Entomol. 706 As regards the organization of larval (nepionic) as compared with imaginal forms, the nymphs and larvæ of insects are, with the exception of many Diptera, nearly as perfectly developed as the adult.

1914 Jrnl. Ecol. 2 187 A series of foliar organs varying progressively through a wide range of form and structure from the primary or juvenile (‘nepionic’) leaves to the floral bracts.

1945 M. F. Glaessner Princ. Micropalaeontol. v. 162 An analysis of the peri-embryonic (nepionic) chamber sequence surrounding the embryonic apparatus in equatorial sections.

1994 Paleobiology 20 40/1 Hatching is marked on the outer shell by a growth discontinuity known as the nepionic constriction.

This entry has been updated (OED Third Edition, September 2003; most recently modified version published online March 2022).

单词	nepionic
释义	nepionicadj. Brit. /ˌniːpɪˈɒnɪk/, U.S. /ˌnipiˈɑnɪk/ Forms: 1800s naepionic, 1800s– nepionic. Origin: A borrowing from Greek, combined with an English element. Etymons: Greek νήπιος , embryonic adj. Etymology: < ancient Greek νήπιος infant, child (of uncertain origin) + -onic (in embryonic adj.). Biology. Designating the early postembryonic stages of ontogeny, spec. the stage between the embryonic and the neanic; of, relating to, or at such a stage of development.Applied variously in different groups of organisms, but esp. to the earliest stage of shell growth in molluscs. ΘΚΠ the world > animals > family unit > [adjective] > young > larval > in the condition of larval1864 nepionic1889 1889 A. Hyatt in Smithsonian Contrib. Knowl. 26 ii. 9 The first larval or næpionic stage of a Nautiloid was, therefore, represented by the apex of the conch in that order. 1898 A. S. Packard Text-bk. Entomol. 706 As regards the organization of larval (nepionic) as compared with imaginal forms, the nymphs and larvæ of insects are, with the exception of many Diptera, nearly as perfectly developed as the adult. 1914 Jrnl. Ecol. 2 187 A series of foliar organs varying progressively through a wide range of form and structure from the primary or juvenile (‘nepionic’) leaves to the floral bracts. 1945 M. F. Glaessner Princ. Micropalaeontol. v. 162 An analysis of the peri-embryonic (nepionic) chamber sequence surrounding the embryonic apparatus in equatorial sections. 1994 Paleobiology 20 40/1 Hatching is marked on the outer shell by a growth discontinuity known as the nepionic constriction. This entry has been updated (OED Third Edition, September 2003; most recently modified version published online March 2022). < adj.1889
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