rar·efiedBrE/ˈreərɪfaɪd/NAmE/ˈrerəfaɪd/adjective[usually before noun](oftendisapproving) understoodorexperiencedbyonlyaverysmallgroupofpeoplewhoshareaparticularareaofknowledgeoractivity高深精妙的;曲高和寡的◆therarefiedatmosphereofacademiclife阳春白雪的学术生活氛围(ofair空气) containinglessoxygenthanusual稀薄的;含氧量低的