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Cos
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==Mathematics, science and technology== * [[Carbonyl sulfide]] * Class of service (CoS or COS), a network header field defined by the [[IEEE 802.1p]] task group * [[Class of service]] (COS), a parameter in telephone systems * [[Cobalt sulfide]] * [[COS cells]], cell lines COS-1 and COS-7 * [[Cosine]], a trigonometric function * [[Cosmic Origins Spectrograph]], a Hubble Space Telescope instrument
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