1 [I,T] (technical术语) to develop or make sth develop a new form or structure, because of aGENETIC change （使）形成新的形体或结构: the ability of the virus to mutate into new forms 病毒变成新形体的能力mutated genes 经突变的基因

2 [I] (formal 正式) to change into a new form 变成新形体: Rhythm and blues mutated into rock and roll. 节奏怨曲变成了摇滚乐。