What is "tetraspore"

Tetraspore \Tet"ra*spore\, n. [Tetra- + spore.] (Bot.) A nonsexual spore, one of a group of four regularly occurring in red seaweeds. -- Tet`ra*spor"ic, a.

n. (context biology English) Any of the four, asexual spores produced by a sporangium

n. one of the four asexual spores produced within a sporangium

Tetraspores are red algae spores produced by the tetrasporophytic ( diploid) phase in the life history of algae in the Rhodophyta as a result of meiosis. The name is derived from the 4 spores that form after this meiosis, the division is of three kinds: cruciate, zonate and tetrahedral.