Ma'anar ƙamus na kalmar "nanovolt" naúrar ƙarfin lantarki ne, daidai da biliyan ɗaya na volt (10^-9 volts). Ana amfani da shi sau da yawa don auna ƙananan ƙarfin lantarki ko bambance-bambancen wutar lantarki a cikin da'irori ko tsarin halittu.
