isoclinal

UK: /ˌaɪsəʊˈklaɪn^əl/ US: (ī′sə klīn′l, ī′sō-)

WordReference Random House Unabridged Dictionary of American English © 2025

i•so•cli•nal  (ī′sə klīn′l, ī′sō-), adj. 

1. of or pertaining to equal direction of inclination; inclining or dipping in the same direction.
2. noting or pertaining to an isoclinic line.
3. Geology noting or pertaining to a fold of strata that is of the nature of an isocline.

n. 

4. Place Names See isoclinic line. 

Also, i•so•clin•ic  (ī′sə klin′ik, ī′sō-). 

• Greek klí̄n(ein) to slope + -al¹)
• iso- + -clinal (1830–40

Collins Concise English Dictionary © HarperCollins Publishers::

isoclinal / ˌaɪsəʊˈklaɪn^əl/, isoclinic / ˌaɪsəʊˈklɪnɪk/ adjective

1. sloping in the same direction and at the same angle
2. (of folds) having limbs that are parallel to each other

noun

1. Also called: isocline, isoclinal line an imaginary line connecting points on the earth's surface having equal angles of dip