PHYLUM /ˈfaɪləm/ ► audio Scrabble 16 Words With Friends 18 Definition noun (linguistics) a large group of languages that are historically related. noun (biology) the major taxonomic group of animals and plants. Examples “Mammals belong to the phylum Chordata.” See all 24 words you can make from PHYLUM → 6-letter words Words starting with P Words ending with M ← Unscramble different letters