英语网 英语单词
Pentad的音标发音
Pentad
英式发音：[pentæd]
美式发音
(n.) Any element, atom, or radical, having a valence of five, or which can be combined with, substituted for, or compared with, five atoms of hydrogen or other monad; as, nitrogen is a pentad in the ammonium compounds.
(a.) Having the valence of a pentad.
伊桑录入
