anticlinal : Idioms & Phrases
Anticlinal line , Anticlinal axis
(Geol.) , a line from which strata dip in opposite directions, as from the ridge of a roof.
Webster 1913
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.