1) Pertaining to such a fold 
• (a.) Inclining or dipping in opposite directions. See Synclinal. • (n.) The crest or line in which strata slope or dip in opposite directions.
Inclining or dipping in opposite directions. See Synclinal. ... <anatomy> Anticlinal line, Anticlinal axis, one of the dorsal vertebrae, which in many animals has an upright spine toward which the spines of the neighboring vertebrae are inclined. ... Origin: Pref. Anti- + Gr. To incline. ... <geology> The crest or line in which strata s...
a hydrocarbon trap where the reservoir has a convex geometry;
An`ti·cli'nal (-klī'n a l) adjective [ Prefix anti- + Greek An`ti·cli'nal noun (Geol.) The crest or line in which strata slope or dip in opposite directions. 
Type: Term Pronunciation: an′tē-klī′năl Definitions: 1. Inclined in opposite directions, as two sides of a pyramid.
[adj] - (geology) sloping downward away from a common crest
adjective sloping downward away from a common crest
inclining in opposite directions from a central axis. · · inclining downward on both sides from a median line or axis, as a fold of rock strata. · pertaining to such a fold.