˜yÐÄvlog

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epitheca

/ ˌɛ±èɪˈθ¾±Ë°ìÉ™ /

noun

  1. the outer and older layer of the cell wall of a diatom Compare hypotheca
“Collins English Dictionary — Complete & Unabridged†2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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˜yÐÄvlog History and Origins

Origin of epitheca1

C19: from epi- + theca
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Example Sentences

Examples have not been reviewed.

Septa radial; dissepiments present; an epitheca surrounds the base of massive or maeandroid forms, but only surrounds individual corallites in simple or branching forms.

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