noun
- An involuntary orienting response; positive or negative reaction to a stimulus source. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). tropism. Retrieved September 20, 2026, from http://smartdefine.org/tropism/definitions/1192409 |
| Chicago | WordNet. 2010. "tropism" http://smartdefine.org/tropism/definitions/1192409 (accessed September 20, 2026). |
| Harvard | WordNet 2010, tropism, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/tropism/definitions/1192409>. |
| MLA | WordNet. "tropism" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/tropism/definitions/1192409> |