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anatropous

[uh-na-truh-puh s]
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adjective Botany.
  1. (of an ovule) inverted at an early stage of growth, so that the micropyle is turned toward the funicle and the embryonic root is at the opposite end.

Origin of anatropous

First recorded in 1840–50; ana- + -tropous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for anatropous

Historical Examples

  • Ovary 1-celled, with an anatropous ovule; stigma sessile, entire.

    The Manual of the Botany of the Northern United States

    Asa Gray

  • Anatropous ovule of a Violet, the parts lettered as in the last.

  • Seed of a Violet (anatropous): a, hilum; b, rhaphe; c, chalaza.

  • Seed of a Larkspur (also anatropous); the parts lettered as in the last.

  • Fertile flowers consisting of a single ovary tapering into a short style; stigmas 2–4, awl-shaped; ovule erect, anatropous.


British Dictionary definitions for anatropous

anatropous

adjective
  1. (of a plant ovule) inverted during development by a bending of the stalk (funicle) attaching it to the carpel wallCompare orthotropous

Word Origin

C19: from ana- (inverted) + -tropous
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012