The doctrine that living organisms have evolved from previously existing forms of living matter(noun)
Any particular version of the doctrine of transformism(noun)
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Use "transformism" in a sentence
"Darwin ... from the idea of transformism (?) to the idea of evolution."
"What I will call 'transformism' is a loose category of people who would answer 'yes' to the above question."
"Are they expert opportunists in the historical tradition of "transformism" in Italian parliamentary governments, which long predates fascism and communism?"