tredecennial

== English == === Etymology === Latin trēdecennium + English -al or Latin trēdecim + English -ennial === Noun === tredecennial sg (rare nonce word) A period of thirteen years. 1952, Proceedings of the IInd International Congress on Criminology III: “Psychiatry, Psychology, Psychoanalysis”, page 65 The tredecennial covered by the period of the survey was in a sense a most remarkable one; for it includes, with almost exact divisions, three significant sub periods: the prewar, the war and the post-war. For more quotations using this term, see Citations:tredecennial.