| AEROTROPISMS | • AEROTROPISM n. curvature in response to concentration of oxygen. |
| ALLOTROPISMS | • allotropisms n. Plural of allotropism. • ALLOTROPISM n. the state of an element existing in more than one form. |
| ANISOTROPISM | • anisotropism n. Alternative form of anisotropy. • ANISOTROPISM n. the state of being anisotropic. |
| CHEMOTROPISM | • chemotropism n. (Biology) The movement or growth of an organism in response to a chemical stimulus. • CHEMOTROPISM n. plant growth in the direction of a particular chemical. |
| GAMOTROPISMS | • GAMOTROPISM n. the tendency of gametes to attract each other. |
| HAPTOTROPISM | • haptotropism n. (Biology) The movement of parts of a plant (especially tendrils) in response to a touch stimulus. • HAPTOTROPISM n. curving in response to touch, as a tendril. |
| HELIOTROPISM | • heliotropism n. The property of some plants of turning under the influence of light; either positively (towards the… • HELIOTROPISM n. the movement of plants towards sunlight. |
| HYDROTROPISM | • hydrotropism n. (Biology) The movement of a plant (or other organism) in response to water, either towards or away from water. • HYDROTROPISM n. growth in the direction of water. |
| ORTHOTROPISM | • orthotropism n. The property of being orthotropic or orthotropous. • ORTHOTROPISM n. vertical growth. |
| PHOTOTROPISM | • phototropism n. (Biology) The movement of a plant towards or away from light. • PHOTOTROPISM n. movement directed by light. |
| PLEIOTROPISM | • pleiotropism n. (Genetics) pleiotropy. • PLEIOTROPISM n. the state of being pleiotropic, having an effect simultaneously on more than one character in the offspring. |
| RHEOTROPISMS | • rheotropisms n. Plural of rheotropism. • RHEOTROPISM n. the direction of growth by water. |