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meridian

me·rid·i·an

meridian

 
pronunciation:
m rI di n
features:
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part of speech: noun
definition 1: an imaginary circle around the earth that passes through the North and the South Pole, or either half of such a circle from one pole to the other.
definition 2: the highest point or peak; zenith.
synonyms:
peak, zenith
similar words:
apex, climax, crest, crown, height, summit, top
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  earth