oximes

synonym: isonitroso compounds
https://doi.org/10.1351/goldbook.O04372
Compounds of structure $\ce{R2C=NOH}$ derived from condensation of aldehydes or ketones with hydroxylamine. Oximes from aldehydes may be called aldoximes; those from ketones may be called ketoximes.
Source:
PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1354 [Terms] [Paper]