Orthotropous
Orthotropal Or*thot"ro*pal, Orthotropous Or*thot"ro*pous, a. [Ortho- + Gr. ? to turn: cf. F. orthotrope.] (Bot.) Having the axis of an ovule or seed straight from the hilum and chalaza to the orifice or the micropyle; atropous. [1913 Webster]

Note: This word has also been used (but improperly) to describe any embryo whose radicle points towards, or is next to, the hilum. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • orthotropous — [ôr thä′trə pəs] adj. [ ORTHO + TROPOUS] Bot. growing straight: said of an ovule with its hilum and micropyle in a straight line …   English World dictionary

  • orthotropous — adjective Etymology: International Scientific Vocabulary Date: 1830 having the ovule straight and upright with the micropyle at the apex …   New Collegiate Dictionary

  • orthotropous — /awr tho treuh peuhs/, adj. Bot. (of an ovule) straight and symmetrical, with the chalaza at the evident base and the micropyle at the opposite extremity. [1820 30; < NL orthotropus. See ORTHO , TROPOUS] * * * …   Universalium

  • orthotropous — adjective Growing straight and having the micropyle at the apex …   Wiktionary

  • orthotropous — or·thot·ro·pous …   English syllables

  • orthotropous — or•thot•ro•pous [[t]ɔrˈθɒ trə pəs[/t]] adj. bot (of an ovule) straight and symmetrical, with the chalaza at the evident base and the micropyle at the opposite extremity • Etymology: 1820–30; < NL orthotropus …   From formal English to slang

  • orthotropous — /ɔˈθɒtrəpəs/ (say aw thotruhpuhs) adjective (of an ovule) straight and symmetrical, with the chalaza at the evident base and the micropyle at the opposite extremity …   Australian English dictionary

  • orthotropous — adjective (of a plant ovule) completely straight with the micropyle at the apex • Ant: ↑campylotropous • Topics: ↑plant, ↑flora, ↑plant life …   Useful english dictionary

  • orthotropous ovule — noun a completely straight ovule with the micropyle at the apex • Hypernyms: ↑ovule …   Useful english dictionary

  • Glossary of botanical terms — Many of the terms used in Wikipedia glossaries (often most) are already defined and explained within Wikipedia itself. However, lists like the following indicate where new articles need to be written and are also useful for looking up and… …   Wikipedia

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