CONVECTION /kənˈvɛkʃən/ Scrabble 17 Words With Friends 22 Definition noun the transfer of heat through a fluid (liquid or gas) caused by molecular motion. noun (meteorology) the vertical movement of heat or other properties by massive motion within the atmosphere. See all 116 words you can make from CONVECTION → 10-letter words Words starting with C Words ending with N ← Unscramble different letters