ˌ ̷ ̷ ̷ ̷ ̷ ̷ˈgläsəm noun
Usage: capitalized
Etymology: New Latin, from ophi- + -glossum, from Greek glōssa tongue — more at gloss (explanation)
: the type genus of the family Ophioglossaceae comprising the adder's-tongues and having a solitary simple frond with netted venation and a terminal spike formed of two rows of coalescent sporangia