1. Of anything that is large but not the largest

See also: big, large

• family Bangiaceae
• family Bathyergidae
• family Batidaceae
• family Batrachoididae
• family Begoniaceae
• family Belemnitidae
• family Belonidae
• family Belostomatidae
• family Bennettitaceae
• family Berberidaceae
• family Betulaceae
• family Bible
• family Bignoniaceae
• family Bittacidae
• family Blastodiaceae
• family Blattidae
• family Blechnaceae
• family Blenniidae
• family Boidae
• family Boletaceae
• family Bombacaceae
• family Bombycidae
• family Bombycillidae
• family Bombyliidae
• family Boraginaceae