noun so·rus \ˈsr-əs\
plural so·ri \ˈsr-ˌī, -ˌē\

Definition of SORUS

:  a cluster of plant reproductive bodies: as
a :  a cluster of sporangia on the underside of a fertile fern frond
b :  a mass of spores bursting through the epidermis of the host plant of a parasitic fungus
c :  a cluster of gemmae on the thallus of a lichen

Origin of SORUS

New Latin, from Greek sōros heap
First Known Use: 1832


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