1
- attrib. important, serious, or significant重要的; 重大的：
the use of drugs is a major problem.
毒品使用是个严重问题。
1.1
- greater or more important; main大部分的; 较重要的; 主要的：
he got the major share of the spoils.
他分得大部分赃物。
1.2
- (of a surgical operation) serious or life-threatening（外科手术）重大的; 生死攸关的：
he had to undergo major surgery.
他得做大手术。
2
- Music (of a scale) having intervals of a semitone between the third and fourth, and seventh and eighth degrees【乐】大音阶的。与MINOR相对。
2.1
- (of an interval) equivalent to that between the tonic and another note of a major scale, and greater by a semitone than the corresponding minor interval大音程的。
2.2
- postpositive(of a key) based on a major scale, tending to produce a bright or joyful effect大调的：
Prelude in G Major.
G大调序曲。
3
- Brit. dated (appended to a surname in public schools) indicating the elder of two brothers〈英, 旧〉（公立学校中置于学生姓氏后, 表示两兄弟中）大的, 年长的。
4
- Logic (of a term) occurring as the predicate in the conclusion of a categorical syllogism【逻】大（项）的。
4.1
- (of a premise) containing the major term in a categorical syllogism大（前提）的。
1
- a rank of officer in the army and the US air force, above captain and below lieutenant colonel陆军少校; （美国）空军少校。
- ORIGIN: Shortening of SERGEANT MAJOR, formerly a high rank.
1.1
- with modifier an officer in charge of a section of band instruments（军乐队中主管某一乐器部的）乐器长：
a trumpet major.
小号长。
2
- Music a major key, interval, or scale【乐】大调; 大音程; 大音阶。
2.1
- Bell-ringing a system of change-ringing using eight bells【鸣钟术】八钟变化鸣铃（法）。
3
- a major world organization, company, or competition主要世界性组织（或公司、比赛）。
4
- N. Amer. a student's principal subject or course〈北美〉主修科目; 主修课程。
4.1
- often with modifier a student specializing in a specified subject主修学生：
a math major.
主修数学的学生。
5
- Logic a major term or premise【逻】大项; 大前提。
6
- Bridge short for MAJOR SUIT.【桥牌】MAJOR SUIT的简称。
no obj.(major in)
- N. Amer. & Austral./NZ specialize in (a particular subject) at college or university〈北美, 澳/新西兰〉（大学）主修：
I was trying to decide if I should major in drama or English.
我想定下来是主修戏剧还是英语。
词源
Middle English: from Latin， comparative of magnus 'great'; perhaps influenced by French majeur.