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单词 microstome
释义

> as lemmas

microstome
microstome n.
Brit. /ˈmʌɪkrə(ʊ)stəʊm/
,
U.S. /ˈmaɪkrəˌstoʊm/
(a) Botany the small opening of the capsule of certain mosses (rare); (b) Zoology a form of certain ciliate protozoans of the genus Tetrahymena that has a small oral apparatus and feeds on bacteria (frequently attributive).Sense (a) is apparently only attested in dictionaries or glossaries.
ΚΠ
1890 Cent. Dict. Microstome, in bot., a small mouth or orifice, as that belonging to the capsule of certain mosses.
1953 Parasitology 43 57/2 The additional terms macrostome form and microstome form will be employed for the two extreme stages when dimorphism is exhibited.
1983 Philos. Trans. (Royal Soc.) B. 301 359 The free-living species T. patula, T. vorax and T. paravorax..possess both macrostome and microstome forms.
extracted from micro-comb. form
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as lemmas
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