British English : ox An ox is a bull that has been castrated. Oxen are sometimes used for pulling vehicles or carrying things. NOUN
noun
an adult castrated male of any domesticated species of cattle, esp Bos taurus, used for draught work and meat
any bovine mammal, esp any of the domestic cattle
combining form
indicating that a chemical compound contains oxygen, used esp to denote that a heterocyclic compound is derived from a specified compound by replacement of a carbon atom with an oxygen atom ⇒ oxazine
combining form
indicating that a chemical compound contains oxygen linked to another atom by a double bond, used esp to denote that a compound is derived from a specified compound by replacement of a methylene group with a carbonyl group ⇒ oxobutanoic acid