noun

1. Biol. any of various small reproductive bodies, usually consisting of a single cell, produced by bacteria, algae, mosses, ferns, certain protozoans, etc., either asexually (asexual spore) or by the union of gametes (sexual spore): they are capable of giving rise to a new adult individual, either immediately or after an interval of dormancy
2. any small organism or cell that can develop into a new individual; seed, germ, etc.

Etymology: ModL spora < Gr, a sowing, seed, akin to speirein, to sow < IE base *(s)p(h)er-, to strew, sow > spread, sprout

intransitive verb spored, sporing spor′·ing