- Any of a group of compounds containing a hydroxyl group bonded to a carbon atom, which in turn is doubly bonded to a nitrogen atom. An oxime is formed by treating an aldehyde or ketone with hydroxylamine.
- A compound formed by the action of hydroxylamine on an aldehyde (aldoxime) or a ketone (ketoxime). The oximes contain the atomic grouping=C:N.OH. They have played an important part in the study of the stereochemistry of nitrogen. Their formation indicates the presence of carbonyl oxygen in the substances from which they are derived.
- One of a series of isonitroso derivatives obtained by the action of hydroxylamine on aldehydes or ketones.
- Any of a class of <xref>organic</xref> <xref>compounds</xref>, of <xref>general formula</xref> RR'C=NOH, derived from the <xref>condensation</xref> of an <xref>aldehyde</xref> (R' = H) or <xref>ketone</xref> with <xref>hydroxylamine</xref>.
- any compound containing the group -C=NOH