iso·cli·nal I. \| ̷ ̷ ̷ ̷ at iso-+|klīnəl\adjective Etymology: International Scientific Vocabulary is- + -clinal : relating to, having, or indicating equality of inclination or dip: as a.alsoisoclinic: being or relating to an isocline b.: being or relating to an isoclinic line • iso·cli·nal·ly\-əlē\adverb II. noun (-s) : isoclinic line