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extrorse

[ ek-strawrs, ek-strawrs ]

adjective

, Botany.
  1. turned or facing outward, as anthers that open toward the perianth.


extrorse

/ ɛkˈstrɔːs /

adjective

  1. botany turned or opening outwards or away from the axis

    extrorse anthers

“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

extrorse

/ ĕkstrôrs′ /

  1. Facing outward, away from the central axis around which a flower is arranged. Used of anthers and the direction in which they open to release pollen.
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Other Words From

  • ex·trorsely adverb
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Word History and Origins

Origin of extrorse1

1855–60; < Late Latin extrorsus in outward direction, equivalent to extr ( a )- extra- + ( v ) orsus (adv.) turned
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Word History and Origins

Origin of extrorse1

C19: from Late Latin extrorsus in an outward direction, from Latin extra- + versus turned towards
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Example Sentences

Stamens 3–6; anthers short, extrorse.

Shrubs with opposite entire leaves, no stipules, the sepals and petals similar and indefinite, the anthers adnate and extrorse, and the cotyledons convolute; the fruit like a rose-hip.

Hæmodoraceæ, 512 Anthers extrorse, opening lengthwise.

Stamens 6–12, more or less united with the style; anthers adnate, extrorse.—Leaves petioled, mostly heart-shaped and entire.

Anthers 2-celled, roundish-oval, blue, extrorse.

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