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orthotropous

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

adjective

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


orthotropous British  
/ ɔːˈθɒtrəpəs /

adjective

  1. (of a plant ovule) growing straight during development so that the micropyle is at the apex Compare 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

Etymology

Origin of orthotropous

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Fruit a kind of dry drupe, with a crustaceous or bony nut-shell, containing a large 4-lobed orthotropous seed.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Asa Gray

Ovary 2–3-celled, with several pendulous orthotropous ovules in each cell; stigma minute.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Asa Gray

Fruit a 3-celled berry, with 1–2 pendulous orthotropous seeds in each cell.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Asa Gray

Herbs, with jointed stems, alternate entire leaves, and perfect flowers in spikes, entirely destitute of floral envelopes, and with 3–5 more or less separate or united ovaries.—Ovules few, orthotropous.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Asa Gray

Ovules very numerous, scattered over the walls, orthotropous.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Asa Gray

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