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Từ điển WordNet v3.1 - WordNet Dictionary

I - noun

the cardinal number that is the sum of twenty-eight and one (Freq. 4)
• Syn:
twenty-nine, XXIX
• Hypernyms:
large integer

II - adjective

being nine more than twenty (Freq. 6)
• Syn:
twenty-nine, xxix
• Similar to:
cardinal