ECOLOGY /ɛˈkɒlədʒi/ Scrabble 13 Words With Friends 15 Definition noun the environment as it relates to living organisms. noun the branch of biology concerned with the relations between organisms and their environment. — synonyms: bionomics, environmental_science See all 42 words you can make from ECOLOGY → 7-letter words Words starting with E Words ending with Y ← Unscramble different letters