To form new biological species by the division of an existing one(verb)
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Use "speciate" in a sentence
"The Birds of Northern Melanesia (written with Jared Diamond) provides a detailed picture of one of Mayr's principal fields of research ” how birds develop into different species ( 'speciate') on island archipelagos."
"Such diversity results from Baikal's great age, which gave animals time to evolve and speciate."
"They don't think God started things off four billion years ago by "breathing life into" some simple unicellular organism that then began to speciate and evolve to produce all of the subsequent biodiversity of this planet."