[ an-thee-sis ]
/ ænˈθi sɪs /

noun, plural an·the·ses [an-thee-seez] /ænˈθi siz/. Botany.

the period or act of expansion in flowers, especially the maturing of the stamens.

Origin of anthesis

1825–35; < New Latin < Greek ánthēsis bloom, equivalent to anthē- (verbid stem of antheîn to bloom) + -sis -sis Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for anthesis

British Dictionary definitions for anthesis


/ (ænˈθiːsɪs) /


the time when a flower becomes sexually functional

Word Origin for anthesis

C19: via New Latin from Greek: full bloom, from anthein to bloom, from anthos flower
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

Word Origin and History for anthesis



"full bloom," 1835, from Greek anthesis, noun of action from antheein "to blossom," from anthos "flower," (see anther).

Online Etymology Dictionary, © 2010 Douglas Harper

Science definitions for anthesis


[ ăn-thēsĭs ]

The period during which a flower is fully open and functional. Also called efflorescence
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.