Literally "with the same type". In botanical nomenclature a homotypic synonym (or nomenclatural synonym) is a synonym that comes into being through a nomenclatural act(adjective)
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Use "homotypic" in a sentence
"Right and left organs are homotypic, metameric organs are homodynamic; homonomy is the relation exemplified by fin-rays or fingers, which are arranged with reference to"
"Under the first comes the law of the existence of certain fundamentally distinct structural types, which are distinguished from one another by their ground-form, by the number of organ-systems, and by the number of homotypic organs they possess, but principally by the relative position of the organs to one another (principle of connections)."
"Antimeres (homotypic parts, _i. e._, halves or rays); (4) Metameres"