试题题干
Words which were used to designate one thing but later changed to mean something else have experienced the process of semantic 
.
参考答案
试题解析
本题考查transfer——词义的转移。
从定语从句which were used to designate one thing but later changed to mean something else（曾经用来指代一件事，但后来变成了别的意思）可以推断出这里应为transfer——词义的转移。
故答案为transfer。