The word journal originally denoted mere“daily paper”but now has

The word journal originally denoted mere“daily paper”but now has come to include“periodical”._____ of meaning is reflected in this example.
【正确答案】：Extension
【题目解析】：意义的变化有extension （扩展）和narrowing (缩小）。题干中所给例子，journal 原来指日报，后来包括期刊了。这个例子体现的是词义的扩展。