Area of folded rock strata

• Geologic feature

Wikipedia Word definitions in Wikipedia
thumb|right|300px|Fig. 1: Isoclines (blue), slope field (black), and some solution curves (red) of y'=xy An isocline is a curve through points at which the parent function 's slope will always be the same, regardless of initial conditions. The word comes ...

Wiktionary Word definitions in Wiktionary
n. 1 (context geology English) A tightly folded syncline or anticline in which the two sides are almost parallel 2 (context mathematics English) Any of a series of lines having the same slope 3 A line on a map linking places with the same magnetic dip