epitheca (plural epithecae)
(microbiology, planktology) The upper half of the theca of a thecate protist such as a diatom or dinoflagellate.
• Frustule
• ucl.ac.uk diatom webpage
• hypotheca
• petechia
Source: Wiktionary
Ep`i*the"ca, n. Etym: [NL., fr. Gr. (Zoöl.)
Definition: A continuous and, usually, structureless layer which covers more or less of the exterior of many corals.
Source: Webster’s Unabridged Dictionary 1913 Edition
23 November 2024
(adjective) concerned primarily with theories or hypotheses rather than practical considerations; “theoretical science”
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