Extended Strong's Greek Lexicon (Abbott-Smith based)
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Usage: διθάλασσος, -ον (δις, θύλασσα); __1. divided into two seas (as the Euxine, Strab., ii, 522). __2. dividing the sea: τόπον δ., a tongue of land, or reef, running out into the sea: Act.27:41.† (AS)