Gaseous plastron see plastron

gas gland (CNID: Hydrozoa) In Siphonophora, glandular epithelium that secretes an air-like gas into a float.

gaster n. [Gr. gaster, stomach] 1. Stomach. 2. (ARTHRO: Insecta) The major part of the abdomen behind the pedicel in threadwaisted Hymenoptera.

gasterostome n. [Gr. gaster, stomach; stoma, mouth] (PLATY: Trematoda) Cercaria in which the sucker is on the midven-tral surface.

gasterotheca n. [Gr. gaster, stomach; theke, case] (ARTHRO: Insecta) Part of the theca or pupa case surrounding the abdomen. see somatotheca.

gastraea n. [Gr. gaster, stomach] Hypothetical adult ancestor of higher animals that all have the gastrula as a common stage in their early ontogeny.

gastraeum n. [Gr. gaster, stomach] The ventral side of a body.

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