"Does the Australian Constitution define "marriage" as being between a man and a woman? I know it does under the Marriage Act."

Section 51(xxi) of the Australian Constitution gives the federal Parliament the power to make laws about marriage. It does not say what marriage is or who can get married. The details of how marriages are conducted in Australia are contained in the Marriage Act 1961.

diagram to help explain Does the Australian Constitution define "marriage" as being between a man and a woman? I know it does under the Marriage Act.