the season of the year between summer and winter, when leaves change colour and the weather becomes colderin the autumn of 2010in early/late autumnthe autumn term (= for example at a school or college in Britain)autumn colours/leavesIt's been a very mild autumn this year.Oxford Collocations Dictionaryadjectivelast,this past,the following,…autumn + nounweather,sun,sunlight,…Seefull entryMore Like ThisSilent lettersgnarled,gnash,gnat,gnaw,gnomehaute cuisine,heir,(NAmE herb),honour,hors d’oeuvre,hourknack,knee,kneel,knife,knight,knit,knob,knock,knot,know,knucklepsalm,psephology,psychic,ptarmigan,pterodactyl,psychologywrangle,wrap,wreath,wreck,wrench,wrestle,wriggle,wring,write,wrongbomb,climb,crumb,doubt,lamb,limbascent,fascinate,muscle,scene,scissorsheight,right,sleigh,weightalign,campaign,design,foreign,malign,reign,unfeignedbalmy,calm,calf,half,yolkautumn,column,condemn,damn,hymn,solemnbristle,fasten,listen,mortgage,soften,thistle,wrestlebiscuit,build,circuit,disguise,guilty,league,rogue,vagueyachtanswer,sword,twoSee worksheet.Word Originlate Middle English: from Old French autompne, or later directly from Latin autumnus.Extra examplesNow is the time when the autumn colours/colors are at their best.The trees were beginning to turn orange and yellow with autumn colours.classes to be held for schoolchildren during the autumn termthe sound of autumn leaves rustlingtheir autumn collection of dresses
See autumn in the Oxford Learner's Dictionary of Academic EnglishSee autumn in the Oxford Advanced American Dictionary