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单词 orthotropous
释义

orthotropous

[ awr-tho-truh-puhs ]
/ ɔrˈθɒ trə pəs /

adjective

Botany. (of an ovule) straight and symmetrical, with the chalaza at the evident base and the micropyle at the opposite extremity.

Origin of orthotropous

From the New Latin word orthotropus, dating back to 1820–30. See ortho-, -tropous

Words nearby orthotropous

orthotone, orthotonos, orthotopic, orthotropic, orthotropism, orthotropous, ortho-xylene, orthros, Ortler, Ortles, ortolan
Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for orthotropous

  • Orthotropous or Straight, those which develop without curving or turning, as in Fig. 344.

    The Elements of Botany|Asa Gray
  • Fruit a kind of dry drupe, with a crustaceous or bony nut-shell, containing a large 4-lobed orthotropous seed.

    The Manual of the Botany of the Northern United States|Asa Gray
  • Orthotropous ovule of Buckwheat: c, hilum and chalaza; f, orifice.

    The Elements of Botany|Asa Gray

British Dictionary definitions for orthotropous

orthotropous
/ (ɔːˈθɒtrəpəs) /

adjective

(of a plant ovule) growing straight during development so that the micropyle is at the apexCompare anatropous
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
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更新时间:2025/1/11 13:29:50