The Collaborative International Dictionary
Isochimal
Isocheimal \I`so*chei"mal\, Isochimal \I`so*chi"mal\, a. Pertaining to, having the nature of, or making, isocheims; as, an isocheimal line; an isocheimal chart.
Wiktionary
isochimal
a. (alternative form of isocheimal English)