log·a·rith·mic \| ̷ ̷ ̷ ̷|rithmik, -mēk\adjective alsolog·a·rith·mi·cal\-mə̇kəl, -mēk-\ 1.: of, involving, or expressed in terms of a logarithm 2.: using, based on, or relating to a logarithmic scale • log·a·rith·mi·cal·ly\-mə̇k(ə)lē, -mēk-, -li\adverb