Conduit
Middle English: from Old French, from medieval Latin conductus, from Latin conducere ‘bring together’ (see conduct).
wiktionary
From Middle English conduyt, condit, from Old French conduit, from Latin conductus. Doublet of conduct.
etymonline
conduit (n.)
c. 1300, conduyt, "conduct, guidance, an escorting party" (a sense now obsolete in this word but preserved in its doublet, conduct), from Old French conduit (12c.) "escort, protection; pipe, channel," from Latin conductus "a leading, a pipe," noun use of past participle of conducere "to lead or bring together; contribute, serve," from assimilated form of com "with, together" (see con-) + ducere "to lead" (from PIE root *deuk- "to lead").
Conduct and conduit differentiated in meaning from 15c. Conduit in the sense "medium or means of conveying" is from mid-14c.; as "pipe or tube or other channel for conveyance of water," late 14c.
