sorus

noun so·rus \ˈsȯr-əs\

plural so·ri \ˈsȯr-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

See sorus defined for kids

New Latin, from Greek sōros heap

First Known Use: 1832

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