Definition of phototropism
: a tropism in which light is the orienting stimulus
What's Trending Now
More Trending Words
Origin and Etymology of phototropism
International Scientific Vocabulary
Medical Dictionary
medical Definition of phototropism
: a tropism in which light is the orienting stimulus — see heliotropism
2
: the reversible change in color of a substance produced by the formation of an isomeric modification when exposed to radiant energy (as light)
Learn More about phototropism
-
Britannica.com: Encyclopedia article about phototropism
Seen and Heard
What made you want to look up phototropism? Please tell us where you read or heard it (including the quote, if possible).
