turned or facing outward, as anthers that open toward the perianth.
- ex·trorse·ly, adverb
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.
Stamens 6–12, more or less united with the style; anthers adnate, extrorse.
Filaments thread-like, much longer than the linear-oblong blunt anthers, which are fixed by a point above the base and extrorse.
Anthers heart-shaped or kidney-shaped, confluently 1-celled, shield-shaped after opening, extrorse.
Sometimes, from their versatile nature, anthers originally introrse become extrorse, as in the Passion-flower and Oxalis.
British Dictionary definitions for extrorse
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
Scientific definitions for extrorse
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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.