increment
n.
mid-15c., "act or process of increasing," from Latin incrementum "growth, increase; an addition," from stem of increscere "to grow in or upon" (see increase). Meaning "amount of increase" first attested 1630s.
〔李〕[in-=into成;cre=to grow生长;-ment n.=the result表行为结果→“the result of growing into a larger amount 数量增长的结果”→] n. the amount of increase 增加量