Wiktionary(0.00 / 0 votes)Rate this definition: 1  treatment(Noun) The process or manner of treating someone or something. 2  treatment(Noun) Medical care for an illness or injury. 3  treatment(Noun) The use of a substance or process to preserve or give particular properties to something.
emo noun. âº [U] a âtype of âpopular âpunk âmusic with words about people's âfeelings and âemotions âº [C] slang a âyoung âperson who âlikes this âmusic, âwears âmainly âblack âclothes, and is often ânervous, âworried, and âunhappy.
Electronic Return Originator (ERO) Law and Legal Definition. Electronic Return Originator (ERO) is a person authorized by the Internal Revenue Service to prepare and transmit tax return information of individuals and other entities to the Internal Revenue Service electronically. Such information may be either collected or prepared by the ERO.