tetravalent/tetrəʹvaylənt/ adj

• bilharziasis
• biliary
• bilingual
• bilious
• bilirubin
• biliverdin
• bilk
• Bill
• bill
• billabong
• bill and coo
• billboard
• billet
• billet-doux
• billfish
• billfold
• billhead
• billhook
• billiards
• billiard table
• billing
• billingsgate
• billion
• billionaire
• bill of exchange