any of a series of compounds formed by the action of hydroxylamine on an aldehyde or ketone, in which the oxygen atom of the CHO group of the aldehyde, or of the CO group of the ketone, is replaced by the :NOH group
Origin:
< ox- + im(ide)
See oxime in American Heritage Dictionary 4
noun
Any of a group of compounds containing a CNOH group, formed by treating aldehydes or ketones with hydroxylamine.