pseudoperculumn.

Brit.

/ˌs(j)uːdə(ʊ)ˈpəːkjᵿləm/, U.S.

/ˌsudoʊˈpərkjəl(ə)m/

Inflections: Plural pseudopercula.

Forms: 1800s– pseudoperculum, 1900s– pseudo-operculum.

Origin: A borrowing from Latin. Etymon: Latin pseudoperculum.

Etymology: < post-classical Latin pseudoperculum (1865 or earlier) < pseudo- pseudo- comb. form + operculum operculum n.

Chiefly Zoology.

A part of an animal (or plant) structure which forms or resembles a lid but is distinct from an operculum; (in gastropod molluscs) an epiphragm (epiphragm n. 1).

ΚΠ

1890 Cent. Dict. Pseudoperculum, a false opercle; a kind of secondary lid closing the aperture of the shell of some pulmonate gastropods.

1900 Amer. Naturalist 34 526 In the anura the space between the otic capsule and the tympanum is spanned by three elements, the stapes, the pseudoperculum, and the extracolumella.

1927 Amer. Jrnl. Sci. 214 101 (title) Pseudopercula in tabulate coral Favosites.

1977 O. W. Richards & R. G. Davies Imms's Gen. Textbk. Entomol. (ed. 10) II. 701 The Pentotomomorphan egg has no cap or an independently evolved cap-like structure, the pseudoperculum.

1994 Jrnl. Crustacean Biol. 14 152/1 Third abdominal somite longest, with medially incised pseudoperculum largely covering anal somite.

Derivatives

† pseudopercular adj. Obsolete rare relating to or of the nature of a pseudoperculum.Apparently only attested in dictionaries or glossaries.

ΚΠ

1890 Cent. Dict. Pseudopercular, false or secondary, as an operculum; pertaining to a pseudoperculum.

ˌpseudoˈperculate adj. rare having a pseudoperculum.

ΚΠ

1890 Cent. Dict. Pseudoperculate, provided with a pseudoperculum; having the aperture closed by a pseudoperculum.

1983 D. L. Hawksworth et al. Ainsworth & Bisby's Dict. Fungi (ed. 7) 35/2 Sherwood (1981) illustrated 9 main types [of ascus] distinguishable by light microscopy:..(F) pseudoperculate (e.g. Odontotrema); (G) operculate (e.g. Pezizales)..[etc.].

This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022).

单词	pseudoperculum
释义	pseudoperculumn. Brit. /ˌs(j)uːdə(ʊ)ˈpəːkjᵿləm/, U.S. /ˌsudoʊˈpərkjəl(ə)m/ Inflections: Plural pseudopercula. Forms: 1800s– pseudoperculum, 1900s– pseudo-operculum. Origin: A borrowing from Latin. Etymon: Latin pseudoperculum. Etymology: < post-classical Latin pseudoperculum (1865 or earlier) < pseudo- pseudo- comb. form + operculum operculum n. Chiefly Zoology. A part of an animal (or plant) structure which forms or resembles a lid but is distinct from an operculum; (in gastropod molluscs) an epiphragm (epiphragm n. 1). ΚΠ 1890 Cent. Dict. Pseudoperculum, a false opercle; a kind of secondary lid closing the aperture of the shell of some pulmonate gastropods. 1900 Amer. Naturalist 34 526 In the anura the space between the otic capsule and the tympanum is spanned by three elements, the stapes, the pseudoperculum, and the extracolumella. 1927 Amer. Jrnl. Sci. 214 101 (title) Pseudopercula in tabulate coral Favosites. 1977 O. W. Richards & R. G. Davies Imms's Gen. Textbk. Entomol. (ed. 10) II. 701 The Pentotomomorphan egg has no cap or an independently evolved cap-like structure, the pseudoperculum. 1994 Jrnl. Crustacean Biol. 14 152/1 Third abdominal somite longest, with medially incised pseudoperculum largely covering anal somite. Derivatives † pseudopercular adj. Obsolete rare relating to or of the nature of a pseudoperculum.Apparently only attested in dictionaries or glossaries. ΚΠ 1890 Cent. Dict. Pseudopercular, false or secondary, as an operculum; pertaining to a pseudoperculum. ˌpseudoˈperculate adj. rare having a pseudoperculum. ΚΠ 1890 Cent. Dict. Pseudoperculate, provided with a pseudoperculum; having the aperture closed by a pseudoperculum. 1983 D. L. Hawksworth et al. Ainsworth & Bisby's Dict. Fungi (ed. 7) 35/2 Sherwood (1981) illustrated 9 main types [of ascus] distinguishable by light microscopy:..(F) pseudoperculate (e.g. Odontotrema); (G) operculate (e.g. Pezizales)..[etc.]. This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022). < n.1890
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