[ prə'rəʊg ]
■ verb ( ~s , proroguing , ~d ) discontinue a session of (a parliament or assembly) without dissolving it.
Derivatives
prorogation -rə'geɪʃ(ə)n noun
Origin
ME: from OFr. proroger , from L. prorogare 'prolong, extend', from pro- 'in front of, publicly' + rogare 'ask'.