tropisn.

Brit.

/ˈtrəʊpɪs/, U.S.

/ˈtroʊpɪs/

Inflections: Plural tropides.

Origin: A borrowing from Greek. Etymon: Greek τρόπις.

Etymology: < ancient Greek τρόπις keel < an ablaut variant (o -grade) of the base of τρέπειν to turn (see trope n.) + -ις -id suffix².In plural form tropides after the Greek plural form.

Zoology.

†1. The straight middle section (keel) of a C-shaped sponge spicule, joining the curved and pointed ends (prorae). Obsolete. rare.

ΘΚΠ

the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [noun] > member of > parts of > sponge spicule > keel of C-shaped sponge-spicule

tropis1887

1887 W. J. Sollas in Encycl. Brit. XXII. 471/2 This will represent a truly C-shaped spicule... The back of the ‘C’ is the keel or tropis; the points are the prows or proræ.

2. In certain nematodes: a tooth-like process or ridge located on the internal ventral surface of the cephalic capsule.

ΚΠ

1967 W. D. Hope in Trans. Amer. Microsc. Soc. 86 308 The structure described as a hollow ventral tooth, here termed the tropis, is, in fact, a process, usually hollow, arising from the internal surface of the ventral side of the cephalic capsule.

1974 R. W. Timm in D. L. Pawson Biol. Antarctic Seas VI. 254/1 No ventral tropis or subventral lobes.

1998 R. M. Warwick et al. Free-living Marine Nematodes III. 46 Thoracostoma, cephalic capsule well developed with ventral hollow tooth-like structure (tropis).

2007 W. D. Hope in J. T. Carlton Light & Smith's Intertidal Invertebr. Central Calif. to Oregon (ed. 4) 243/1 The cephalic capsule among members of the genera Pseudocella, Thoracostoma, and Triceratonema (Leptosomatidae) has a thickened, internal, ventral ridge termed a tropis.

This entry has been updated (OED Third Edition, March 2014; most recently modified version published online March 2022).

单词	tropis
释义	tropisn. Brit. /ˈtrəʊpɪs/, U.S. /ˈtroʊpɪs/ Inflections: Plural tropides. Origin: A borrowing from Greek. Etymon: Greek τρόπις. Etymology: < ancient Greek τρόπις keel < an ablaut variant (o -grade) of the base of τρέπειν to turn (see trope n.) + -ις -id suffix².In plural form tropides after the Greek plural form. Zoology. †1. The straight middle section (keel) of a C-shaped sponge spicule, joining the curved and pointed ends (prorae). Obsolete. rare. ΘΚΠ the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [noun] > member of > parts of > sponge spicule > keel of C-shaped sponge-spicule tropis1887 1887 W. J. Sollas in Encycl. Brit. XXII. 471/2 This will represent a truly C-shaped spicule... The back of the ‘C’ is the keel or tropis; the points are the prows or proræ. 2. In certain nematodes: a tooth-like process or ridge located on the internal ventral surface of the cephalic capsule. ΚΠ 1967 W. D. Hope in Trans. Amer. Microsc. Soc. 86 308 The structure described as a hollow ventral tooth, here termed the tropis, is, in fact, a process, usually hollow, arising from the internal surface of the ventral side of the cephalic capsule. 1974 R. W. Timm in D. L. Pawson Biol. Antarctic Seas VI. 254/1 No ventral tropis or subventral lobes. 1998 R. M. Warwick et al. Free-living Marine Nematodes III. 46 Thoracostoma, cephalic capsule well developed with ventral hollow tooth-like structure (tropis). 2007 W. D. Hope in J. T. Carlton Light & Smith's Intertidal Invertebr. Central Calif. to Oregon (ed. 4) 243/1 The cephalic capsule among members of the genera Pseudocella, Thoracostoma, and Triceratonema (Leptosomatidae) has a thickened, internal, ventral ridge termed a tropis. This entry has been updated (OED Third Edition, March 2014; most recently modified version published online March 2022). < n.1887
随便看	cappudding cappy cappy-hole cappyhole capraesque capramide caprate caprates capreae capreol capreolate capreoline caprese capret caprettie capri capri pants capriband capribbon capric capric acid capric series capriccio capriccios capriccioso