a professor employed by a college or university for a specific purpose or length of time and often part-time.
Are New Idioms Ever Created?Many idioms—expressions that are not taken literally—are so old and so familiar that we don’t think twice about using them. We say, for example, “it’s raining cats and dogs” to indicate that it’s pouring outside, and “comfortable as an old shoe” to explain an easy and familiar relationship. We can trace the etymology of some idioms to books and sayings that were first used hundreds …
Origin of adjunct professor
First recorded in 1820–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019