astropyle
/ˈastrə(ʊ)pʌɪl/Zoology
noun
An orifice in the capsule of phaeodarian actinopods, consisting of a tubular projection or proboscis arising from a radiate operculum.
Origin
Late 19th century; earliest use found in Ernst Haeckel (1834–1919). From astro- (in allusion to the radiate operculum) + -pyle.
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