[1950–55; prop(ionate) + oxy-2 + (di)phen(yl)]This word is first recorded in the period 1950–55. Other words that entered Englishat around the same time include: bleep, conflict of interest, hot line, point spread, speech recognitionoxy- is a combining form representing oxygen in compound words, sometimes as an equivalent of hydroxy-. Other words that use the affix oxy- include: alkoxy, oxyhydrogen, oxymorphone, oxytetracycline, phenoxybenzamine