orthotropous

[ awr-tho-truh-puhs ]

adjective

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

orthotropous

/ ɔːˈθɒtrəpəs /

adjective

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

Word History and Origins

Origin of orthotropous¹

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

Example Sentences

Nutlets coriaceous, small, tawny-hairy below, containing a single orthotropous pendulous seed.

From Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg

Orthotropous ovule of Buckwheat: c, hilum and chalaza; f, orifice.

From Project Gutenberg