n.

1. 變化；浮沉盛衰；變質
2. 元音變化
3. 【生】變種，突變
   This giant spider was created out of the mutation of the genes of a normal spider.

   這隻大蜘蛛是因為普通蜘蛛的基因突變而造成的。

n.

1. the action or process of changing in form or nature.
   ▸a change.
2. a change in the structure of a gene resulting in a variant form which may be transmitted to subsequent generations.
   ▸a distinct form resulting from genetic mutation.
3. Linguistics  (in Celtic languages) change of an initial consonant in a word caused by the preceding word.
   ▸(in Germanic languages) the umlaut process.