Why was "tantrum" trending last week?
late 14c., in the phrase artificial day "part of the day from sunrise to sunset," from Old French artificial, from Latin artificialis "of or belonging to art," from artificium (see artifice). Meaning "made by man" (opposite of natural) is from early 15c. Applied to things that are not natural, whether real (artificial light) or not (artificial flowers). Artificial insemination dates from 1897. Artificial intelligence "the science and engineering of making intelligent machines" was coined in 1956.