[{"Bold_text": "verb (used with object)", "List Items": ["to make active; cause to function or act.Synonyms: start , actuate Antonyms: halt , stop , check", "Physics.to render more reactive; excite :to activate a molecule.to induce radioactivity.", "to render more reactive; excite :to activate a molecule.", "to induce radioactivity.", "to aerate (sewage) in order to accelerate decomposition of impure organic matter by microorganisms.", "Chemistry.to make (carbon, a catalyst, molecules, etc.) more active.to hasten (reactions) by various means, as heating.", "to make (carbon, a catalyst, molecules, etc.) more active.", "to hasten (reactions) by various means, as heating.", "to place (a military unit or station) on an active status in an assigned capacity."]}, {"Bold_text": "verb (used without object)", "List Items": ["to become active or functional."]}]