pneumostomen.

Brit.

/ˈnjuːmə(ʊ)stəʊm/, U.S.

/ˈn(j)umoʊˌstoʊm/

Origin: Formed within English, by compounding. Etymons: pneumo- comb. form, -stome comb. form.

Etymology: < pneumo- comb. form + -stome comb. form.

Zoology.

In pulmonate gastropod molluscs: a contractile respiratory orifice connecting the lung with the exterior.

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > class Gastropoda > [noun] > member of > parts of

pneumostome1940

1940 Chambers' Techn. Dict. 657/1 Pneumostome, in Pulmonata, the aperture of the mantle-cavity.

1946 Jrnl. Animal Ecol. 180/1 Specimens in an aquarium are often seen with a bubble of air at the pneumostome.

1990 Science 12 Oct. 282 Upon reaching the water surface, the pneumostome opens (expiration) and closes (inspiration) several times before the animal resubmerges.

This is a new entry (OED Third Edition, September 2006; most recently modified version published online March 2022).

单词	pneumostome
释义	pneumostomen. Brit. /ˈnjuːmə(ʊ)stəʊm/, U.S. /ˈn(j)umoʊˌstoʊm/ Origin: Formed within English, by compounding. Etymons: pneumo- comb. form, -stome comb. form. Etymology: < pneumo- comb. form + -stome comb. form. Zoology. In pulmonate gastropod molluscs: a contractile respiratory orifice connecting the lung with the exterior. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > class Gastropoda > [noun] > member of > parts of pneumostome1940 1940 Chambers' Techn. Dict. 657/1 Pneumostome, in Pulmonata, the aperture of the mantle-cavity. 1946 Jrnl. Animal Ecol. 180/1 Specimens in an aquarium are often seen with a bubble of air at the pneumostome. 1990 Science 12 Oct. 282 Upon reaching the water surface, the pneumostome opens (expiration) and closes (inspiration) several times before the animal resubmerges. This is a new entry (OED Third Edition, September 2006; most recently modified version published online March 2022). < n.1940
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