【正确答案】：
EXTENSION OF MEANING IS THE NAME GIVEN TO THE WIDENING OF MEANING WHICH SOME WORDS UNDERGO./EXTENSION OF MEANING IS A PROCESS BY WHICH A WORD WHICH ORIGINALLY HAD A SPECIALIZED MEANING HAS NOW BECOME GENERALIZED.
【题目解析】：本题考查词义扩大的含义。词义的扩大即某些词所经历的词义扩展，它指的是一个词的词义从表达某一专门意义转化到表示概括意义的过程。