- the commander of a trireme
- at Athens, a person who built, outfitted, and maintained a trireme for the service of the state
Origin: L trierarchus < Gr triērarchos < triērēs, a trireme (< tri-, tri- + -ērēs < IE base *erē-, to row, oar > row, rudder) + archos, leader, chief: see -arch
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- The captain of a Greek trireme.
- An Athenian who outfitted and maintained a trireme as a part of his civic duties.
Origin: Latin triērarchus, from Greek triērarkhos : triērēs, trireme; see trei- in Indo-European roots + arkhos, ruler; see -arch.