Meaning

noun a substance formed during a chemical process before the desired product is obtained

verb act between parties with a view to reconciling differences

adjective lying between two extremes in time or space or state

originBorrowed from Medieval Latin intermediātus, perfect passive participle of intermediō (see -ate (adjective-forming suffix)), further from intermedius (“intermediate”) + -ō (verb-forming suffix).

Etymology from Wiktionary, CC BY-SA 3.0