7 definitions found for Sorus

sorus n 1: a spore-producing structure in certain lichens and fungi 2: cluster of sporangia usually on underside of a fern frond

sorus sours

sorus noun (plural sori) Etymology: New Latin, from Greek sōros heap Date: 1832 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

sorus
n. (pl. sori) Bot. a heap or cluster, esp. of spore-cases on the under-surface of a fern-leaf, or in a fungus or lichen.
Etymology: mod.L f. Gk soros heap

sorus n. (pl. sori) Bot. a heap or cluster, esp. of spore-cases on the under-surface of a fern-leaf, or in a fungus or lichen. [mod.L f. Gk soros heap]

Sorus So"rus, n. (a) In parasitic fungi, any mass of spores bursting through the epidermis of a host plant. (b) In lichens, a heap of soredia on the thallus.

Sorus So"rus, n.; pl. Sori. [NL., fr. Gr. ? a heap.] (Bot.) One of the fruit dots, or small clusters of sporangia, on the back of the fronds of ferns.