The initiatory temple rite which consists of being ceremonially washed, receiving a new name, receiving sacred garments, viewing the LDS version of creation and the fall, and learning various handshakes essential for exaltation. These rituals “are called endowments, because in and through them the recipients are endowed with power from on high” (Bruce R. McConkie, Mormon Doctrine, pp. 226f.). Endowments are also performed vicariously for the dead.
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.