Quorum 3901 diameter, asid thrown as an exercise of strength or skill. Deck quoits, for use on shipboard, are made from rounds of rope. Quorum. In mediaeval times in England a commission granted to the justices of the peace of a county ran to the effect that any two of the justices might try offences, one of whom {quorum) must be selected from certain named justices. By an extension of its use the term came to be applied to any number of persons, or any particular persons, whose presence at a meeting is necessary to validate its pro- ceedings. Quo Wai-ran to (Lat. By what authority). A legal proceeding instituted to determine judicially the right of a claimant to an office or franchise. This proceeding is in theory insti- tuted for the benefit of the public, but inci- dentally may help individuals. It lies where one unlawfully usurps an office or franchise, or forfeits it by non-user or bad conduct. Q. V. (quod vide), 'which see.'