Tropism
noun, Biology.
1.
an orientation of an organism to an external stimulus, as light, especially by growth rather than by movement.
1.
variant of -tropy.
noun
1.
the response of an organism, esp a plant, to an external stimulus by growth in a direction determined by the stimulus
combining form
1.
indicating a tendency to turn or develop in response to a certain stimulus: phototropism
tropism tro·pism (trō’pĭz’əm)
n.
The turning or bending movement of a living organism or part toward or away from an external stimulus, such as light, heat, or gravity.
tro’pic, tro·pis’tic adj.
-tropism suff.
Tropism: stereotropism.
tropism
(trō’pĭz’əm)
The growth or movement of a living organism or anatomical structure toward or away from an external stimulus, such as light, heat, or gravity. See also geotropism, hydrotropism, phototropism.
tropistic adjective
Read Also:
- Tropo-
1. a combining form meaning “turn,” “reaction, response,” “change,” “troposphere,” used in the formation of compound words: tropophilous. combining form 1. indicating change or a turning: tropophyte tropo- or trop- pref. Tropism: tropocollagen.
- Tropocollagen
tropocollagen tro·po·col·la·gen (trō’pə-kŏl’ə-jən, trŏp’ə-) n. The molecular component of a collagen fiber, consisting of three polypeptide chains coiled around each other.
- Tropology
noun, plural tropologies for 2. 1. the use of figurative language in speech or writing. 2. a treatise on figures of speech or tropes. 3. the use of a Scriptural text so as to give it a moral interpretation or significance apart from its direct meaning. noun (pl) -gies 1. (rhetoric) the use of figurative […]
- Tropomyosin
tropomyosin tro·po·my·o·sin (trō’pə-mī’ə-sĭn, trŏp’ə-) n. Any of a group of muscle proteins that bind to molecules of actin and troponin to regulate the interaction of actin and myosin.
- Troponin
noun, Biochemistry. 1. a protein of muscle tissue that binds calcium ions and is involved in contraction. noun, Biochemistry. 1. a protein within a troponin complex that helps regulate the heartbeat and can be used as an indicator of myocardial infarction. troponin tro·po·nin (trō’pə-nĭn, trŏp’ə-) n. A calcium-regulated protein in muscle tissue occurring in three […]