/ (ˌɛpɪˈθiːkə) /
noun plural -cae (-siː)
the outer and older layer of the cell wall of a diatomCompare hypotheca
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Word Origin for epitheca
C19: from epi- + theca
Words nearby epitheca
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