British Dictionary definitions for seventh-day adventists
(Protestant theol) a member of that branch of the Adventists which constituted itself as a separate body after the expected Second Coming of Christ failed to be realized in 1844. They are strongly Protestant, believe that Christ's coming is imminent, and observe Saturday instead of Sunday as their Sabbath
A denomination of Christians who proclaim that the Second Coming of Jesus will occur in the very near future. Unlike practically all other Christians, they observe Saturday, rather than Sunday, as a Sabbath.