“astropyle”的英文意思_释义_用法

单词

astropyle

释义

astropyle Zool.|ˈæstrəʊpaɪl|
[f. Gr. ἄστρον star + πύλη gate.]
A tubular aperture or funnel-like membranous projection found in some radiolarians.
1887E. Haeckel Radiolaria in Rep. Challenger XVIII. i. p. iv, This osculum is closed by a radiate cover (astropyle or operculum radiatum).1888Rolleston & Jackson Anim. Life 876 Or again there is a main oral aperture or astropyle... The astropyle consists of a tubular proboscis, rising from the centre of a radially striated disc or operculum.1901Calkins Protozoa iii. 70 The Cannopylea, in which the membrane around the pores is drawn out into funnel-like projections termed astropyles.

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