[1830–40; oxy-2 + acid]This word is first recorded in the period 1830–40. Other words that entered Englishat around the same time include: ante, baby talk, format, showcase, stroboscopeoxy- is a combining form representing oxygen in compound words, sometimes as an equivalent of hydroxy-. Other words that use the affix oxy- include: epoxy, oxyacetylene, oxychloride, oxysalt, oxytetracycline