n. (Geol.) The crest or line in which strata slope or dip in opposite directions. [ 1913 Webster ]

a. [ Pref. anti- + Gr. kli`nein to incline. ] 1. Inclining or dipping in opposite directions. See Synclinal. [ 1913 Webster ]

2. (Bot.) occurring at right angles to the surface of a plant organ. [ PJC ]

Anticlinal line,
Anticlinal axis (Geol.), a line from which strata dip in opposite directions, as from the ridge of a roof. --
Anticlinal vertebra (Anat.), one of the dorsal vertebræ, which in many animals has an upright spine toward which the spines of the neighboring vertebræ are inclined. [ 1913 Webster ]

n. [ Gr. &unr_; the earth + E. anticlinal. ] (Geol.) An upward bend or flexure of a considerable portion of the earth's crust, resulting in the formation of a class of mountain elevations called anticlinoria; -- opposed to geosynclinal. [ 1913 Webster ]