prior

Universal Words adjective, noun adjective [onlybeforenoun] 1 happening or existing before sth else or before a particular time SYNPREVIOUS: Although not essential, some prior knowledge of statistics is desirable. * This information must not be disclosed without prior written consent. * Visits are by prior arrangement. * Please give us prior notice if you need an evening meal. * She will be unable to attend because of a prior engagement. 2 already existing and therefore more important: They have a prior claim to the property. 3 (prior to) (formal) before sth: during the week prior to the meeting noun (feminine prioress ) 1 a person who is in charge of a group of MONKS or NUNS living in a PRIORY 2 (in an ABBEY) a person next in rank below an ABBOT or ABBESS