WordNet: tropism

an involuntary orienting response; positive or negative reaction to a stimulus source

• hypernym reaction, response

• hyponym ergotropism

• hyponym geotropism

• hyponym heliotropism

• hyponym meteortropism

• hyponym neurotropism

• hyponym phototropism

• hyponym trophotropism

• hyponym thermotropism

tropism

• (suomi) tropismi (synonyymi)