SINGLETON By N., Sam M.S. - 25 1. A foetus developing by itself or a single offspring. 2. The only child of 2 parents. SINGLETON: "Joe was a singleton with no brothers or sisters." Related Psychology Terms DISCIPLINE (literally, “to learn”) CHILD PSYCHIATRY A Comparison of Maternal and Paternal Filicide Piaget’s Theory of Cognitive Development ONLY CHILDREN (Onliness) ENURESIS (Bed-wetting) CHILD ABUSE (The Battered-Child Syndrome) ADOLESCENCE (Theories) CHILD PSYCHOLOGY FAMILY CARE Cite this page: N., Sam M.S., "SINGLETON," in PsychologyDictionary.org, April 13, 2013, https://psychologydictionary.org/singleton/ (accessed August 16, 2022).