Coarse or large; large enough to be visible to the naked eye; macroscopic. [L. grossus, thick]
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gross 'grōs adj
1 a) glaringly or flagrantly obvious
2) growing or spreading with excessive or abnormal luxuriance
3) of, relating to, or dealing with general aspects or broad distinctions <important to understand the \gross behavior of the sexually responding animal (A. C. Kinsey)>
gross·ly adv
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(grōs) [L. grossus rough] 1. coarse or large. 2. visible to the naked eye without the use of magnification; called also macroscopic.Medical dictionary. 2011.