Definition of transient. 1  1 : one that is transient (see 1transient): such asa : a guest or boarder who stays only brieflyb : a person traveling about usually in search of work. 2  2a : a temporary oscillation that occurs in a circuit because of a sudden change of voltage or of loadb : a transient current or voltage.
Gerontophobia is the fear of growing old, or a hatred or fear of the elderly. Many people have this phobia. The term comes from the Greek Î³Î­ÏÏÎ½ â gerÅn, old man and ÏÏÎ²Î¿Ï â phobos, fear. 1 Ageism.
Definition of gerontology. : the comprehensive multidisciplinary study of aging and older adults â compare geriatrics.