an estimation that is too low; an estimate that is less than the true or actual value
例句
用作名词(n.)
Underestimation of the space required for future communal needs is a common problem in camps of limited area.低估了未来公共需求的所需空间，而将灾民安置点区域设计的过于有限，是规划时的一个常见问题。
The author discussed the underlying reasons of probable underestimation on SARS economic burden.作者还对疾病负担低估的原因进行了讨论。
