The Collaborative International Dictionary
Monotypic
Monotype \Mon"o*type\, Monotypic \Mon`o*typ"ic\, a. [Mono- + -type: cf. F. monotype.] (Biol.) Having but one type; containing but one representative; as, a monotypic genus, which contains but one species.
Wiktionary
monotypic
a. (context biology taxonomy English) Relating to or exhibiting monotypy
WordNet
monotypic
adj. consisting of only one type