utility to warm a building | a canal for a current of water |
the presence of heat | a contest of speed |
the trait of being intensely emotional | any competition |
the sensation caused by heat energy | people who are believed to belong to the same genetic stock |
a preliminary race in which the winner advances to a more important race | (biology) a taxonomic group that is a division of a species; usually arises as a consequence of geographical isolation within a species |
a form of energy that is transferred by a difference in temperature | the flow of air that is driven backwards by an aircraft propeller |
applies to nonhuman mammals: a state or period of heightened sexual arousal and activity | |