Compounds of 三大

• 三大
  (pref) the big three ...
• 三大国
  (n) the Big Three (countries)
• 三大節
  (n) the three grand national holidays (Prayer to the Four Quarters, Empire Day, the Emperor's Birthday; pre-1927)
• 三大洋
  (n) (obsc) three great oceans (Pacific, Atlantic & Indian)
• 三大疾病
  (n) three major diseases (cancer, cerebral stroke, acute myocardial infarction)
• 三大都市
  (n) the three largest cities