Alternative form of accelerated ageing.

(rail transport) The time when trains were powered by steam locomotives. / A period of industrialisation when steam power was used.

(historical) A period in the 1920s and 1930s in which jazz music and dance styles rapidly gained nationwide popularity in the United States.

Mental reversion to a younger age, used in therapy, as a coping mechanism, or as a manifestation of a psychiatric issue.

plural of age regressor

plural of age set

Someone who undergoes age regression.

present participle of age out

present participle of age out

(historical) A period that lasted from the mid-16th (or mid-15th) to the mid-19th centuries, in which the dominance of sailing ships in global trade and warfare culminated.