Meaning

verb disturb in mind or make uneasy or cause to be worried or alarmed

verb disturb or interfere with the usual path of an electron or atom

verb cause a celestial body to deviate from a theoretically regular orbital motion, especially as a result of interposed or extraordinary gravitational pull

originFrom Late Middle English perturben (“to disturb (someone) mentally, disquiet; to cause disorder to (something), confuse; to hinder (something)”), from Old French perturber, and from its etymon Latin perturbāre, the present active infinitive of perturbō (“to confuse; to alarm, disturb, trouble, perturb”), from per- (intensifying prefix) + turbō (“to agitate, disturb, unsettle, perturb; to upset”)…

Etymology from Wiktionary, CC BY-SA 3.0