phototropism

phototropism definition - medical

pho·tot·ro·pism (fō-tŏtˈrə-pĭzˌəm)

noun
Growth or movement of a sessile organism toward or away from a source of light.

Related Forms:

  • phoˌto·troˈpic (fōˌtə-trōˈpĭk, -trŏpˈĭk) adjective

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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