Ordinances are rites administered by the authority of the priesthood. Some of these are performed in their chapels like baptisms, confirmations, and ordination into the Melchizedek priesthood. The most important ordinances are the ones performed in the temple. They are the endowment and eternal marriage.
Dictionary of "Mormonese"
Stop talking past each other. Gain a better understanding of the words that are unique to Mormonism and the differences of shared terms between Mormonism and Christianity.