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substance [substances]▼(physical matter; material, see also: matter)noun[UK: ˈsʌb.stəns] [US: ˈsʌb.stəns]
substance abuse▼(overindulgence in a drug)noun[UK: ˈsʌb.stəns ə.ˈbjuːs] [US: ˈsʌb.stəns ə.ˈbjuːs]
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