inoperculateadj.

/ɪnəʊˈpəːkjʊlət/

Etymology: in- prefix⁴.

Not having an operculum or lid.

1. Conchology. Of or belonging to the Inoperculata, a division of Pulmonifera containing those univalves, such as snails, whose shell has no operculum.

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > class Gastropoda > [adjective] > belonging to order Pulmonifera > of or belonging to Inoperculata

inoperculate1835

inoperculated1836

inopercular1864

1835–6 Todd's Cycl. Anat. & Physiol. I. 114/1 The surface of the body..covered with a shell..always inoperculate.

1854 S. P. Woodward Man. Mollusca ii. 159 One large division of the land-snails is furnished with an operculated shell; the rest are in-operculate, and sometimes shell-less.

2. Botany. Of an ascus or sporangium: lacking an operculum and therefore opening by splitting. Also as n., a fungus having this characteristic.

ΘΚΠ

the world > plants > part of plant > reproductive part(s) > spore or sporule > [adjective] > of or having a spore case > opening by splitting

inoperculate1879

1879 W. Phillips tr. E. Boudier in Trans. Woolhope Naturalists' Field Club (1887) 202 The second [section of the family] I would call Inoperculate Discomycetes, or simply Inoperculæ, because the exit of the sporidia takes place by a small hole, formed at the extreme summit of the asci, with its margin more or less elevated, but without any appearance of an operculum.

1913 Trans. Brit. Mycol. Soc. 4 402 In the inoperculate species, the spores have a tendency to septation.

1929 Trans. Brit. Mycol. Soc. 14 267 The epithecium, overlying the hymenium..occurs in several inoperculate genera.

1943 Mycologia 24 585 The outstanding characters of this Panamanian discomycete are unlike those of any of the stromatic inoperculates.

1950 E. A. Bessey Morphol. & Taxon. Fungi iii. 45 In this order [sc. Chytridiales] the zoospores or motile gametes escape through an exit papilla or tube whose apex softens and permits the motile cells to push out (the inoperculate series), or they escape through a sort of cap that opens like a trap door, the so-called operculum (the operculate series).

1970 J. Webster Introd. Fungi i. 25 In the inoperculate chytrids..the sporangium forms a discharge tube which penetrates to the exterior of the host cell.

This entry has not yet been fully updated (first published 1900; most recently modified version published online June 2022).

单词	inoperculate
释义	inoperculateadj. /ɪnəʊˈpəːkjʊlət/ Etymology: in- prefix⁴. Not having an operculum or lid. 1. Conchology. Of or belonging to the Inoperculata, a division of Pulmonifera containing those univalves, such as snails, whose shell has no operculum. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > class Gastropoda > [adjective] > belonging to order Pulmonifera > of or belonging to Inoperculata inoperculate1835 inoperculated1836 inopercular1864 1835–6 Todd's Cycl. Anat. & Physiol. I. 114/1 The surface of the body..covered with a shell..always inoperculate. 1854 S. P. Woodward Man. Mollusca ii. 159 One large division of the land-snails is furnished with an operculated shell; the rest are in-operculate, and sometimes shell-less. 2. Botany. Of an ascus or sporangium: lacking an operculum and therefore opening by splitting. Also as n., a fungus having this characteristic. ΘΚΠ the world > plants > part of plant > reproductive part(s) > spore or sporule > [adjective] > of or having a spore case > opening by splitting inoperculate1879 1879 W. Phillips tr. E. Boudier in Trans. Woolhope Naturalists' Field Club (1887) 202 The second [section of the family] I would call Inoperculate Discomycetes, or simply Inoperculæ, because the exit of the sporidia takes place by a small hole, formed at the extreme summit of the asci, with its margin more or less elevated, but without any appearance of an operculum. 1913 Trans. Brit. Mycol. Soc. 4 402 In the inoperculate species, the spores have a tendency to septation. 1929 Trans. Brit. Mycol. Soc. 14 267 The epithecium, overlying the hymenium..occurs in several inoperculate genera. 1943 Mycologia 24 585 The outstanding characters of this Panamanian discomycete are unlike those of any of the stromatic inoperculates. 1950 E. A. Bessey Morphol. & Taxon. Fungi iii. 45 In this order [sc. Chytridiales] the zoospores or motile gametes escape through an exit papilla or tube whose apex softens and permits the motile cells to push out (the inoperculate series), or they escape through a sort of cap that opens like a trap door, the so-called operculum (the operculate series). 1970 J. Webster Introd. Fungi i. 25 In the inoperculate chytrids..the sporangium forms a discharge tube which penetrates to the exterior of the host cell. This entry has not yet been fully updated (first published 1900; most recently modified version published online June 2022). < adj.1835
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