planularadj.

Brit.

/ˈplanjᵿlə/, U.S.

/ˈplænjələr/

Origin: A borrowing from Latin, combined with an English element. Etymons: Latin plānus , -ular suffix.

Etymology: < classical Latin plānus (see plain adj.²) + -ular suffix. In quot. 1858 at sense 1 probably after French planulaire ( Lamarck Hist. nat. des animaux sans vertèbres(1816) III. 157, used of flatworms; Lamarck does not use a scientific Latin form). With sense 1 compare earlier planulate adj., planar adj. In sense 2 after planula n.

1. Of or having a flattened form. In later use also: of or forming a plane surface; planar.

ΘΚΠ

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

flatc1430

platy1539

vlat1602

platform1632

planulate1846

planular1858

1858 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Planularis, applied by Lamarck to a section (Planulares) of soft worms having flat bodies: planular.

1894 Bull. Torrey Bot. Club 21 215 Legume generally narrow, with planular valves.

1972 Limnol. & Oceanogr. 17 191 A further advantage to planular orientation, then, may be the reduction of twisting motions, which might injure tissue.

2004 Herald Sun (Melbourne) (Nexis) 21 June 91 It was from these paintings with their planular construction, tilted shallow space and altered viewpoints, that Cubism and 20th-century painting sprang.

2. Zoology. Of or relating to a planula or planulae.

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [adjective] > of class Hydrozoa > relating to embryo

planular1890

1890 Cent. Dict. Planular, of or pertaining to a planula.

1981 Ecology 62 611 (heading) Dispersal of the solitary coral Balanophyllia elegans by demersal planular larvae.

1997 Nature 8 May 137/3 Stony corals..may overcome the difficulties of planular recruitment by reproducing asexually by polyp expulsion.

2003 Biol. Bull. 205 66/1 Invagination leads to the zooxanthellae being restricted to the planular endoderm and hence to the gastrodermal cells of the adult anemone.

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

单词	planular
释义	planularadj. Brit. /ˈplanjᵿlə/, U.S. /ˈplænjələr/ Origin: A borrowing from Latin, combined with an English element. Etymons: Latin plānus , -ular suffix. Etymology: < classical Latin plānus (see plain adj.²) + -ular suffix. In quot. 1858 at sense 1 probably after French planulaire ( Lamarck Hist. nat. des animaux sans vertèbres(1816) III. 157, used of flatworms; Lamarck does not use a scientific Latin form). With sense 1 compare earlier planulate adj., planar adj. In sense 2 after planula n. 1. Of or having a flattened form. In later use also: of or forming a plane surface; planar. ΘΚΠ the world > space > shape > condition of being broad in relation to thickness > [adjective] flatc1430 platy1539 vlat1602 platform1632 planulate1846 planular1858 1858 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Planularis, applied by Lamarck to a section (Planulares) of soft worms having flat bodies: planular. 1894 Bull. Torrey Bot. Club 21 215 Legume generally narrow, with planular valves. 1972 Limnol. & Oceanogr. 17 191 A further advantage to planular orientation, then, may be the reduction of twisting motions, which might injure tissue. 2004 Herald Sun (Melbourne) (Nexis) 21 June 91 It was from these paintings with their planular construction, tilted shallow space and altered viewpoints, that Cubism and 20th-century painting sprang. 2. Zoology. Of or relating to a planula or planulae. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [adjective] > of class Hydrozoa > relating to embryo planular1890 1890 Cent. Dict. Planular, of or pertaining to a planula. 1981 Ecology 62 611 (heading) Dispersal of the solitary coral Balanophyllia elegans by demersal planular larvae. 1997 Nature 8 May 137/3 Stony corals..may overcome the difficulties of planular recruitment by reproducing asexually by polyp expulsion. 2003 Biol. Bull. 205 66/1 Invagination leads to the zooxanthellae being restricted to the planular endoderm and hence to the gastrodermal cells of the adult anemone. This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022). < adj.1858
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