Wilmut wil·mut US/ˈwɪlmʌt/ uncommon noun 1. English geneticist who succeeded in cloning a sheep from a cell from an adult ewe (born in 1944) SynonymsIan Wilmut Related words Broader terms geneticist WordNet 2.1 (Princeton University). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved.