intermediary (noun) - an agent acting between parties; a stage or step between the beginning and end of a process (also intermediate) [in-ter-mee-dee-er-ee]
BREAKDOWN: INTER- (between) + MED- (middle) + -ARY (one who does)
intermediary and intermediate as adjectives mean situated or or happening between; transitional
intermediate as a verb means to intervene or mediate
disintermediate means to eliminate intermediaries and connect directly
See also: mediate
“The tool which serves as intermediary between theory and practice, between thought and observation, is mathematics; it is mathematics which builds the linking bridges and gives the ever more reliable forms.” —David Hilbert



