ENDOCARDIUM Scrabble 17 Words With Friends 21 Scrabble letter values: E1N1D2O1C3A1R1D2I1U1M3 = 17 Definition noun the membrane that lines the cavities of the heart and forms part of the heart valves. See all 772 words you can make from ENDOCARDIUM → 11-letter words Words starting with E Words ending with M ← Unscramble different letters