Original: The Seventh-day Adventist Church ( commonly abbreviated '' Adventist '' Although '' SDA '' is commonly used , '' Adventist '' is the church 's own officially preferred abbreviation of '' Seventh-day Adventist '' .
Simplified: The Seventh-day Adventist ( abbreviated '' Adventist '' Although '' SDA '' is commonly used , '' Adventist '' is the church 's own officially preferred abbreviation of '' Seventh-day Adventist '' .