SEMIDIAMETER Scrabble 17 Words With Friends 19 Scrabble letter values: S1E1M3I1D2I1A1M3E1T1E1R1 = 17 Definition noun the apparent radius of a celestial body when viewed as a disc from the earth. See all 802 words you can make from SEMIDIAMETER → 12-letter words Words starting with S Words ending with R ← Unscramble different letters