Synonyms for Sc (same or very similar meaning)
WordNet sense 1 (a white trivalent metallic element; sometimes classified in the rare earth group; occurs in the Scandinavian mineral thortveitite):
scandium
WordNet sense 2 (a state in the Deep South; one of the original 13 colonies):
South Carolina, Palmetto State
WordNet sense 3 (a permanent council of the United Nations; responsible for preserving world peace):
Security Council
From the ODE community, based on WordNet
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