biquinary

== English == === Alternative forms === bi-quinary === Etymology === From bi- +‎ quinary. === Adjective === biquinary (not comparable) (mathematics) Employing, or relating to, an arithmetical system and notation in which each decimal digit is represented by a coefficient of five and a coefficient of one ==== Usage notes ==== This is the system on which the function of the abacus is based. ==== Translations ====