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1. Sloping downward from opposite directions to meet in a common point or line.
2. Geology Relating to, formed by, or forming a syncline.
syn•cli•nal(sɪnˈklaɪn l, sɪŋ-, ˈsɪŋ klɪ nl)
1. sloping downward from opposite directions so as to meet in a common point or line.
a. inclining upward on both sides from a median line or axis, as a downward fold of rock strata.
b. pertaining to such a fold.