DILATOR Scrabble 8 Words With Friends 9 Definition noun a muscle or nerve that dilates or widens a body part. noun a drug that causes dilation. noun a surgical instrument that is used to dilate or distend an opening or an organ. — synonyms: dilater See all 129 words you can make from DILATOR → 7-letter words Words starting with D Words ending with R ← Unscramble different letters