Stonewort

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Any of various complex algae of the family Characeae, known for being branched and having enclosed egg cells.
  2. 2
    any of various submerged aquatic algae of the genus Chara having nodes with whorled filamentlike branches; usually encrusted with calcium carbonate deposits wordnet

Etymology

From stone + wort.

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