1. Consisting of, or involving the use of, three terms; as, a trinomial systematic name specifying the genus, species, and variety

Encyclopedia: Trinomial

• family Mobulidae
• family Molidae
• family Molossidae
• family Momotidae
• family Moniliaceae
• family Monocanthidae
• family Monodontidae
• family Monotropaceae
• family Moraceae
• family Morchellaceae
• family Motacillidae
• family Mucoraceae
• family Mugilidae
• family Mullidae
• family Muraenidae
• family Muridae
• family Musaceae
• family Muscicapidae
• family Muscidae
• family Musophagidae
• family Mustelidae
• family Mutillidae
• family Myacidae
• family Mycetophylidae
• family Mycobacteriaceae