Standard Lemma guide

hypotheca

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

The lower or posterior half of the theca of a thecate protist such as a diatom or dinoflagellate

Definition source: English Wiktionary via Wiktextract

Topics: biology, botany, microbiology, natural-sciences, planktology

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Etymology tree Proto-Indo-European *upó Ancient Greek ῠ̔πό (hŭpó) Ancient Greek ὑπο- (hupo-)der. English hypo- English theca English hypotheca From hypo- + theca.

Across languages

Translations

3 source translations are retained for this English entry.

  • German: Hypotheka — lower half of a diatom frustule
  • Irish: hipithiach — lower half of a diatom frustule
  • Korean: 하각 (hagak) — lower half of a diatom frustule