1. Definition: 1. a set of three similar things considered as a unit

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1. Definition: 1. of trade unions; "the union movement"; "union negotiations"; "a union-shop clause in the contract"

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1. Definition: 1. the quality of being united into one

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1. Definition: 1. a set of seven similar things considered as a unit

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1. Definition: 1. a musical composition written for six performers

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1. Definition: 1. exchange goods without involving money

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1. Definition: 1. a Russian carriage pulled by three horses abreast

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1. Definition: 1. (music) two or more sounds or tones at the same pitch or in octaves; "singing in unison"

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1. Definition: 1. the working together of two things (muscles or drugs for example) to produce an effect greater than the sum of their individual effects

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1. Definition: 1. a musical composition for four performers

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1. Definition: 1. a relationship of mutual understanding or trust and agreement between people

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1. Definition: 1. a distribution in shares

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1. Definition: 1. five performers or singers who perform together

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1. Definition: 1. (physics) the property of being isotropic; having the same value when measured in different directions

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1. Definition: 1. an inclination to support or be loyal to or to agree with an opinion; "his sympathies were always with the underdog"; "I knew I could count on his understanding"

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1. Definition: 1. cooperative work done by a team (especially when it is effective); "it will take money, good planning and, above all, teamwork"

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1. Definition: 1. a long and complex sonata for symphony orchestra

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1. Definition: 1. the relation between two different species of organisms that are interdependent; each gains benefits from the other

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1. Definition: 1. a union of interests or purposes or sympathies among members of a group

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1. Definition: 1. the quality of being relative and having significance only in relation to something else

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1. Definition: 1. action taken in return for an injury or offense

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1. Definition: 1. the reestablishing of cordial relations

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1. Definition: 1. the statement (oral or written) of an exchange of promises; "they had an agreement that they would not interfere in each other's business"; "there was an understanding between management and the workers"

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