The word "picture" originally denoted only "painting", but now h

The word "picture" originally denoted only "painting", but now has come to include "drawings" and even "photographs". This is an example to illustrate ______.
【正确答案】：extension
【题目解析】：本题考查第七章词义的扩大extension。Picture的词义由原来的painting，而后来不段增加。