For·ties n. pl. See Forty.
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For·ty, n.; pl. Forties
1. The sum of four tens; forty units or objects.
2. A symbol expressing forty units; as, 40, or xl.
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forties
n 1: the time of life between 40 and 50 [syn: mid-forties]
2: the decade from 1940 to 1949 [syn: 1940s]