transcription, транскрипция: [ ˈī-sə-ˌpleth ]
noun
Etymology: International Scientific Vocabulary is- + Greek plēthos quantity; akin to Greek plēthein to be full — more at full
Date: 1908
1. : an isoline on a graph showing the occurrence or frequency of a phenomenon as a function of two variables
2. : a line on a map connecting points at which a given variable has a specified constant value
• iso·pleth·ic ˌī-sə-ˈple-thik adjective