miogeoclineEtymologyCoined in 1966 by Dietz and Holden from the miogeosyncline concept of the outdated geosynclinal theory.miogeocline means an area of sedimentation that occurs along the passive margin of a continent. Lexicurio rates it Sui generis — a strength score of 89 out of 100.nounAn area of sedimentation that occurs along the passive margin of a continent.