stroma

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun a mass of fungal tissue that has spore-bearing structures embedded in it or on it
  2. noun the dense colorless framework of a chloroplast
  3. noun the supporting tissue of an organ (as opposed to parenchyma)

Etymology

From Latin strōma (“mattress, bed covering”), from Ancient Greek στρῶμα (strôma, “bed”), from στόρνυμι (stórnumi, “to stretch out”).

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