syncline

== English == === Etymology === From syn- +‎ -cline. === Pronunciation === (US) IPA(key): /ˈsɪn.klaɪn/, [ˈsɪŋˌklaɪn] Rhymes: -ɪnklaɪn === Noun === syncline (plural synclines) (geology) A concave-upward fold in rock strata ==== Antonyms ==== anticline ==== Holonyms ==== synform ==== Translations ==== === References === Dictionary of Geological Terms (Anchor Books, 1984, edited by Robert L. Bates and Julia A. Jackson)