gnathosoma n. [Gr. gnathos, jaw; soma, body] (ARTHRO: Chelicerata) The anterior of two basic regions of the body of a mite or tick bearing the mouth parts; a capitulum pseudotagma.
gnathostegite n. [Gr. gnathos, jaw; stegos, roof] (ARTHRO: Crustacea) One of a pair of plates covering the mouth parts.
Gnathostomulida n. [Gr. gnathos, jaw; stoma, mouth] A
phylum of microscopic, free-living marine worms that are acoelomate bilateria with a mono-ciliated skin epithelium, jaws and a muscular pharyngeal apparatus; commonly called jaw-worms.
gnathothorax n. [Gr. gnathos, jaw; thorax, breast] (ARTHRO: Crustacea) Having the first, sometimes also the second, thoracic somites fused with the cephalon; the cephalon and pereon.
gnotobiote n. [Gr. gnostos, known; bios, life] A known microorganism living in or on a host.
gnotobiotic culture The breeding or culturing of organisms by themselves or in association with other known kinds of organisms. see agnotobiotic culture.
gnotobiotics n.pl. [Gr. gnostos, known; bios, life] A field of biology involving breeding or culturing of organisms by themselves or together with other known kinds of organisms. gnotobiotic a. see agnotobiotic culture.
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