noun pl. sori
Origin: ModL < Gr sōros, a heap: see soma
Used by arrangement with John Wiley & Sons, Inc.
noun pl. so·ri
- A cluster of sporangia borne on the underside of a fern frond.
- A reproductive structure in certain fungi and lichens.
Origin: New Latin sōrus, from Greek sōros, heap; see teuə- in Indo-European roots.
sorus - Science Definition
Plural sori sori
- 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.
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