ORNITHOLOGY Scrabble 18 Words With Friends 19 Scrabble letter values: O1R1N1I1T1H4O1L1O1G2Y4 = 18 Definition noun the branch of zoology that studies birds. See all 243 words you can make from ORNITHOLOGY → 11-letter words Words starting with O Words ending with Y ← Unscramble different letters