physoclistousadj.

Brit.

/ˌfʌɪsə(ʊ)ˈklɪstəs/, U.S.

/ˌfaɪsəˈklɪstəs/

Forms: 1800s physoclystous, 1900s– physoclistous.

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

Etymology: < scientific Latin Physoclisti, Physoclysti, former name of a division of teleost fishes (1868 or earlier; < ancient Greek ϕῦσα bladder (see physa n.) + Hellenistic Greek κλειστός shut, closed: see cleistogamic adj.) + -ous suffix. Compare slightly earlier physostomous adj.

Ichthyology.

Of, relating to, or designating a teleost fish in which there is no opening between the swim-bladder and the gut. Cf. physostomous adj.

ΘΚΠ

the world > animals > fish > parts of fish > [adjective] > having air-bladder closed

physoclistous1872

physoclistic1883

1872 E. D. Cope in Prelim. Rep. U.S. Geol. Surv. Montana 348 Of the preceding twenty-four species the greater part are physostomous Actinopteri; and there is no species of a physoclystous family in the list.

1887 E. D. Cope Origin Fittest 327 The descent of the Physoclystous fishes has probably been from Holostean ancestors, both with and without the intervention of Physostomous forms.

1951 Jrnl. Exper. Biol. 28 554 A fresh-water physoclistous fish in hydrostatic equilibrium with water of density 1.000 and occupying a total volume of 100 ml. can be shown to have a swimbladder of approximately 7 ml.

1986 A. S. Romer & T. S. Parsons Vertebr. Body (ed. 6) ix. 360 In a large series of advanced teleosts, the connection with the digestive tract is entirely lost, a condition termed physoclistous.

2002 Fishery Bull. (Nexis) 100 324 Most rock fishes have physoclistous swim bladders that expand with the reduced pressure as these fish are brought to the surface.

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

单词	physoclistous
释义	physoclistousadj. Brit. /ˌfʌɪsə(ʊ)ˈklɪstəs/, U.S. /ˌfaɪsəˈklɪstəs/ Forms: 1800s physoclystous, 1900s– physoclistous. Origin: A borrowing from Latin, combined with an English element. Etymons: Latin Physoclisti , -ous suffix. Etymology: < scientific Latin Physoclisti, Physoclysti, former name of a division of teleost fishes (1868 or earlier; < ancient Greek ϕῦσα bladder (see physa n.) + Hellenistic Greek κλειστός shut, closed: see cleistogamic adj.) + -ous suffix. Compare slightly earlier physostomous adj. Ichthyology. Of, relating to, or designating a teleost fish in which there is no opening between the swim-bladder and the gut. Cf. physostomous adj. ΘΚΠ the world > animals > fish > parts of fish > [adjective] > having air-bladder closed physoclistous1872 physoclistic1883 1872 E. D. Cope in Prelim. Rep. U.S. Geol. Surv. Montana 348 Of the preceding twenty-four species the greater part are physostomous Actinopteri; and there is no species of a physoclystous family in the list. 1887 E. D. Cope Origin Fittest 327 The descent of the Physoclystous fishes has probably been from Holostean ancestors, both with and without the intervention of Physostomous forms. 1951 Jrnl. Exper. Biol. 28 554 A fresh-water physoclistous fish in hydrostatic equilibrium with water of density 1.000 and occupying a total volume of 100 ml. can be shown to have a swimbladder of approximately 7 ml. 1986 A. S. Romer & T. S. Parsons Vertebr. Body (ed. 6) ix. 360 In a large series of advanced teleosts, the connection with the digestive tract is entirely lost, a condition termed physoclistous. 2002 Fishery Bull. (Nexis) 100 324 Most rock fishes have physoclistous swim bladders that expand with the reduced pressure as these fish are brought to the surface. This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022). < adj.1872
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