Meaning of ALD- in English

combining form

or aldo-

Etymology: probably from French ald-, from aldéhyde, from German aldehyd — more at aldehyde

1. : containing the aldehyde group — in names of classes of compounds

aldo hexose

— compare aldehydo-

2. : related to an aldehyde

ald imine

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.