“tractellum”的英文意思

单词

tractellum

释义

‖ tractellum Biol.|trækˈtɛləm|
Pl. tracˈtella.
[mod.L., f. L. tract-, ppl. stem of trahĕre to draw, after flagellum: cf. pulsellum.]
The anterior flagellum of an infusorian, etc., which serves to draw the body after it in swimming. Hence tracˈtellate a. [-ate²], furnished with a tractellum.
1880Kent Infusoria I. 429 Among the free-swimming monoflagellate Infusoria.., where the locomotive appendage..fulfils during natation the rôle of a tractellum.1891Cent. Dict., Tractellate.

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