The crossword solution for the term SUFFIX FOR HUMAN is OID, which is a three-letter suffix. OID is derived from the Greek word 'oides', meaning 'LIKE' or 'RESEMBLING'. It is commonly used in medical terminology to refer to a condition or disease that is similar to another. For example, the suffix -oid is used to describe a tumor that resembles a benign tumor. In general, the suffix -oid is used to indicate something that is similar to or RESEMBLING something else.