1. greater in importance, size, or degree
2. serious or significant in effect or importance

1. a student’s main subject of study in college
2. a military officer ranking above captain and below lieutenant colonel
Usage: military
3. a student specializing in a particular subject

1. to specialize in a particular subject at college

Examples

• The company made a major announcement about its expansion plans.
• She suffered major injuries in the car accident.
• His major is computer science.
• The major led his troops into battle.
• She’s an English major at the university.
• He decided to major in biology.
• This is a major problem that needs immediate attention.
• The major renovation will take six months to complete.