planulateadj.

Brit.

/ˈplanjᵿleɪt/,

/ˈplanjələt/, U.S.

/ˈplænjəˌleɪt/,

/ˈplænjələt/

Origin: Probably a borrowing from Latin. Etymon: Latin planulatus.

Etymology: Probably < scientific Latin planulatus (1804 or earlier as specific epithet in zoological and paleontological use) < classical Latin plānus (see plain adj.²) + -ulus -ule suffix + -ātus -ate suffix². Compare planular adj.

Chiefly Zoology and Palaeontology.

Of or having a flattened form.Now used esp. of ammonoids.

ΘΚΠ

the world > space > shape > condition of being broad in relation to thickness > [adjective]

flatc1430

platy1539

vlat1602

platform1632

planulate1846

planular1858

1846 J. D. Dana U.S. Exploring Exped.: Zoophytes 570 The cells are nearly circular, contiguous, or planulate.

1882 Amer. Naturalist 16 742 Those [forms of the mollusc Planorbis] in which the whorls are either planulate, angulated, carinated or sub-carinated.

1961 J. Stubblefield Davies's Introd. Palaeontol. (ed. 3) iv. 118 A number of forms the early whorls of which are of planulate type..are followed in slightly later strata by ‘capricorns’ which retain the planulate form throughout life.

1993 E. N. K. Clarkson Invertebr. Palaeontol. & Evol. (ed. 3) viii. 234/1 The shell may be of normal rather flattened form (planulate), very compressed (oxycone), very fat and inflated (cadicone) or almost globular (sphaerocone).

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

单词	planulate
释义	planulateadj. Brit. /ˈplanjᵿleɪt/, /ˈplanjələt/, U.S. /ˈplænjəˌleɪt/, /ˈplænjələt/ Origin: Probably a borrowing from Latin. Etymon: Latin planulatus. Etymology: Probably < scientific Latin planulatus (1804 or earlier as specific epithet in zoological and paleontological use) < classical Latin plānus (see plain adj.²) + -ulus -ule suffix + -ātus -ate suffix². Compare planular adj. Chiefly Zoology and Palaeontology. Of or having a flattened form.Now used esp. of ammonoids. ΘΚΠ the world > space > shape > condition of being broad in relation to thickness > [adjective] flatc1430 platy1539 vlat1602 platform1632 planulate1846 planular1858 1846 J. D. Dana U.S. Exploring Exped.: Zoophytes 570 The cells are nearly circular, contiguous, or planulate. 1882 Amer. Naturalist 16 742 Those [forms of the mollusc Planorbis] in which the whorls are either planulate, angulated, carinated or sub-carinated. 1961 J. Stubblefield Davies's Introd. Palaeontol. (ed. 3) iv. 118 A number of forms the early whorls of which are of planulate type..are followed in slightly later strata by ‘capricorns’ which retain the planulate form throughout life. 1993 E. N. K. Clarkson Invertebr. Palaeontol. & Evol. (ed. 3) viii. 234/1 The shell may be of normal rather flattened form (planulate), very compressed (oxycone), very fat and inflated (cadicone) or almost globular (sphaerocone). This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022). < adj.1846
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