Definition of sorus
plural sori
play
\ˈsȯr-ˌī, -ˌē\
: a cluster of plant reproductive bodies: such 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
