Ursprungbi- + sol. Attested since about 1700. Compare Dutch bijzon.
Formerbisol(indefinite, nominative, singular) · bisols(genitive, indefinite, singular) · bisolen(definite, nominative, singular) · bisolens(definite, genitive, singular) · bisolar(indefinite, nominative, plural) · bisolars(genitive, indefinite, plural) · bisolarna(definite, nominative, plural) · bisolarnas(definite, genitive, plural)