Dimensions rhymes with:
mentions, apprehensions, attentions, contentions, convention's, conventions, detentions, extensions, inventions, mentions, pensions, pretensions, suspensions
Dimensions sounds like:
damaging, dancing, dehumanizing, demagoguing, demjanjuk, demjanjuk's, demonizing, denison's, denizens, denkins, denouncing, diminishing, dinkins, dinkins', dominicans, doomsaying, downsizing, downsizings, downswing, duensing, dungeons