greater or larger in extent, number, or amount;
e.g. The major part of the applications were rejected.
a high-ranking officer in the armed forces (army, navy, or air force) who is placed above a captain and below a lieutenant colonel;
e.g. They were ordered by the major to retreat.
(American) the subject that is a student's principle course of study at an academic institute, or a student who is primarily studying a particular subject;
e.g. He is pursuing a major in history. She is a computer science major.
(American) to pursue a particular subject as one's main course of study at an academic institute;
e.g. They have decided to major in English literature.