|ba.trə(ˌ)kō|spərməm noun
Usage: capitalized
Etymology: New Latin, from batrach- + -spermum
: a genus (the type of the family Batrachospermaceae) of red algae of the order Nemalionales found in slow-moving fresh waters and having a thallus that consists of a conspicuous central axis bearing transverse whorls of short branches at regular intervals