extrorse

[ ek-strawrs, ek-strawrs ]

adjectiveBotany.

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

Origin of extrorse

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

Other words from extrorse

ex·trorse·ly, adverb

Words Nearby extrorse

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use extrorse in a sentence

Stamens 3, opposite the outer lobes of the corolla-like perianth; anthers extrorse.
The Manual of the Botany of the Northern United States | Asa Gray
Stamens 6–12, more or less united with the style; anthers adnate, extrorse.
The Manual of the Botany of the Northern United States | Asa Gray
Filaments thread-like, much longer than the linear-oblong blunt anthers, which are fixed by a point above the base and extrorse.
The Manual of the Botany of the Northern United States | Asa Gray
Anthers heart-shaped or kidney-shaped, confluently 1-celled, shield-shaped after opening, extrorse.
The Manual of the Botany of the Northern United States | Asa Gray
Sometimes, from their versatile nature, anthers originally introrse become extrorse, as in the Passion-flower and Oxalis.
Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5 | Various

British Dictionary definitions for extrorse

extrorse

extrorsal

/ (ɛkˈstrɔːs) /

adjective

botany turned or opening outwards or away from the axis: extrorse anthers

Origin of extrorse

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

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

Scientific definitions for extrorse

extrorse

[ ĕk′strôrs′ ]

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.

Browse