lithocyst

English

Etymology

From litho- +‎ cyst.

Noun

lithocyst (plural lithocysts)

  1. (zoology) A sac containing otoliths, found in medusae and other invertebrates.
  2. (botany) A small, siliceous structure found in diatoms and some other types of algae that fills with gas or oil, controlling the buoyancy of the algae.

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