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English definition of “long”

long

adverb (TIME)    /lɒŋ/ US  /lɑːŋ/
A2 used to mean "(for) a long time ", especially in questions and negative sentences : Have you been waiting (for) long? I'm just writing a letter but it won't take long. How long have you been in England ? Don't rush - take as long as you like. We've been walking all day long. I've known her longer than you have. I won't be staying much longer.Lasting for a long time C2 a long period of time before or after something: She left the house long before I arrived . It wasn't long before he was back with his family . He did not join them until long after they had eaten . used with the past participle or the - ing form of the verb to mean that a state or activity has continued for a long time : a long-awaited letter long-serving employees Lasting for a long time Grammar:LongLong is an adjective or an adverb.Grammar:MeasurementsGrammar:Area: length, width, depth and heightWe use the nouns length, width, depth and height and the adjectives long, wide, deep and high to talk about area and size:Grammar:Weight and volumeWe use the verb weigh to measure weight:Grammar:Frequency, speed, timeWe use many different expressions to describe frequency, speed and time. Here are some of them:
(Definition of long adverb (TIME) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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