Webster's Revised Unabridged Dictionary · 1913

Monotype

Monotype , adjective

[Mono- + -type: compare French monotype.]

(Biology) Having but one type; containing but one representative; as, a monotypic genus, which contains but one species.

Also: Monotypic

Monotype

[Mono- + -type.]

1.
(Biology) The only representative of its group, as a single species constituting a genus.
2.
A print (but one impression can be taken) made by painting on metal and then transferring the painting to paper by pressure; also, the process of making such prints.
3.
A kind of keyboard-operated typesetting and casting machine that makes and sets separate characters.