noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The movement of a plant towards or away from light. countable, uncountable
2. 2
   an orienting response to light wordnet

Antonyms

All antonyms

scototropismskototropism

Etymology

From photo- + -tropism.

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