tropism /trōˈpi-zm/ (biology) noun- Orientation in response to stimulus
- A general term for heliotropism, geotropism, etc
ORIGIN: Gr tropos a turning tropistic /trop-istˈik/ adjective Of tropism -trope /-trōp/ combining form Denoting a tendency towards or affinity for, as in heliotrope ORIGIN: Gr tropos a turn -tropic adj combining form -tropism n combining form |