Origin: Greek prefix hydro-
Hydroxy has 3 different meanings across 1 category:
Clipping of hydroxychloroquine.
"The pharmacist advised me to stop taking my daily dose of hydroxy immediately after I developed a rash, as it was just the clipped version of the full drug name."
being or containing a hydroxyl group
"The chemical formula for ethanol shows that it contains a hydroxy group attached to its carbon chain."
Being, or containing a hydroxyl radical.
"The chemical engineer explained that adding a hydroxy group to the polymer chain would significantly improve its water resistance."