Ex·tem'po·ra·ry adjective 1. Extemporaneous. 'In extemporary prayer.' Fuller. 2. Made for the occasion; for the time being. [ Obsolete] ' Extemporary habitations.' Maundrell. Found on http://www.encyclo.co.uk/webster/E/94
extemporary 1. Arising at the moment, occasional, casual; sudden, unexpected. 2. Made for, or suggested by the occasion; hastily built, framed, prepared, or provided; makeshift. Found on http://www.wordinfo.info/words/index/info/view_unit/2105/