Origin: F. Sanguin, L. Sanguineus, fr. Sanguis blood. Cf. Sanguineous.
3. (Science: chemical) bloodstone.
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... genetically engineered organisms will result in significant benefit, but with little risk to the environment. Ecologists, however, are not so sanguine and in the current 'green' political atmosphere their opinions are very influential. Thus most developed countries now have in force a series ...
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