semilogarithmic

[sem-ee-law-guh-rith-mik, -rith-, -log-uh-, sem-ahy-]
Often sem·i·log.

Origin of semilogarithmic

First recorded in 1915–20; semi- + logarithmic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018