diols

https://doi.org/10.1351/goldbook.D01748
Compounds that contain two hydroxy groups, generally assumed to be, but not necessarily, alcoholic. @A00217@ diols are also called @G02654@.
Source:
PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1332 [Terms] [Paper]