marriage equality
noun [ U ] US
（同性恋人士享有的）平等婚姻
marriage between two people of the same sex, thought of as being legally the same as, and of equal importance to, marriage between two people of opposite sexes
（同性恋人士享有的）婚姻平等权
the situation in which two people of the same sex have the same legal right to marriage as two people of opposite sexes