sori

[ sawr-ahy, sohr-ahy ]
/ ˈsɔr aɪ, ˈsoʊr aɪ /

noun

plural of sorus.

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Definition for sori (2 of 2)

sorus
[ sawr-uh s, sohr- ]
/ ˈsɔr əs, ˈsoʊr- /

noun, plural so·ri [sawr-ahy, sohr-ahy] /ˈsɔr aɪ, ˈsoʊr aɪ/.

Botany. one of the clusters of sporangia on the back of the fronds of ferns.
Mycology. a soruslike spore mass of certain fungi and lichens.

Origin of sorus

1825–35; < New Latin < Greek sōrós heap
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for sori

British Dictionary definitions for sori (1 of 2)

sori
/ (ˈsɔːraɪ) /

noun

the plural of sorus

British Dictionary definitions for sori (2 of 2)

sorus
/ (ˈsɔːrəs) /

noun plural -ri (-raɪ)

a cluster of sporangia on the undersurface of certain fern leaves
any of various similar spore-producing structures in some lichens and fungi

Word Origin for sorus

C19: via New Latin from Greek sōros a heap
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 sori

sorus
[ sôrəs ]

Plural sori (sôrī)

A cluster of sporangia borne on the underside of a fern frond. A sorus is sometimes covered by an indusium. Also called fruitdot
A reproductive structure consisting of masses of spores, characteristic of certain fungi such as rusts and smuts.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.