noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A branched swelling at the base of an aquatic plant (such as an alga) that it uses to fix itself in place

Etymology

From Ancient Greek ἅπτω (háptō, “fasten”).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.