Tropism
[TRO-piz-əm]
Part of speech: noun
Origin: Greek, late 19th century
1.
(Biology) The turning of all or part of an organism in a particular direction in response to an external stimulus.
Examples of Tropism in a sentence
"The houseplant had a sense of tropism triggered by sunlight."
"Some organisms’ tropism is related to water."
Get the Word of the Day sent directly to your inbox!
Daily QuestionWhat is a synonym for “vulnerary”?
Recent Words
What's the word?
Start defining your knowledge
Get daily words and quizzes sent straight to your inbox!