1) substitutionNoun
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An event in which one thing is substituted for another. The replacement of lost blood by a transfusion of donor blood. | بدل تبدیلی ادل بدل |
2) substitutionNoun
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The act of putting one thing or person in the place of another:. He sent Smith in for Jones but the substitution came too late to help. | تبادلہ |