Intensive Outpatient Treatment (also known as IOP for Intensive Outpatient Program) is a primary treatment program recommended in some circumstances by a clinical and medical assessment. IOP may be recommended for those who do not need medically-supervised detox.
The genitive is the case (or function) of an inflected form of a noun or pronoun showing ownership, measurement, association, or source. Adjective: genitival. The suffix -'s on nouns is a marker of genitive case in English. Genitive case can also be indicated by an of phrase after a noun.
THE GENITIVE CASE. 1  The chief use of the genitive case in Latin is to qualify nouns. 2  The word or words which are found in the genitive case DESCRIBE, DEFINE, or CLASSIFY the person or thing which is denoted by the noun which is being qualified.