pref. 下, 减退, 低下

[医] 低, 少, 减退, 迟, 在下, 逊, 不足, 次, 过少

Hypo- \Hy"po-\ [Gr. ? under, beneath; akin to L. sub. See
{Sub-}.]
1. A prefix signifying a less quantity, or a low state or
degree, of that denoted by the word with which it is
joined, or position under or beneath.

2. (Chem.) A prefix denoting that the element to the name of
which it is prefixed enters with a low valence, or in a
low state of oxidization, usually the lowest, into the
compounds indicated; as, hyposulphurous acid.