Meaning of ACTIVATE in English

verb (-vated; -vating) Date: 1626 transitive verb to make active or more active: as, a. to make (as molecules) reactive or more reactive, to convert (as a provitamin) into a biologically active derivative, to make (a substance) radioactive, to treat (as carbon or alumina) so as to improve adsorptive properties, d. to set up or formally institute (as a military unit) with the necessary personnel and equipment, to put (an individual or unit) on active duty, intransitive verb to become active, activation noun activator noun

Merriam Webster. Explanatory English dictionary Merriam Webster.      Толковый словарь английского языка Мерриам-Уэбстер.