a. and sb. Also 5 erron. tricenn-. [ad. L. trīcēnāri-us of, pertaining to, or consisting of thirty, f. trīcēnī thirty each.]
A. adj. Of or pertaining to thirty; containing, or lasting, thirty days. ? Obs.
1655. Stanley, Hist. Philos., III. (1701), 75/2. After Solons time, the Civil year consisted of Months, alternately of twenty nine, and thirty days, at Athens, though divers places of Greece did not for a long time after part with their tricenary Months.
1671. H. M., trans. Erasm. Colloq., 389. Tricenary and yearly Masses.
B. sb. R. C. Ch. [med.L. tricēnārium, Du Cange.] A series of masses said on thirty consecutive days: cf. TRENTAL.
1482. Monk of Evesham (Arb.), 94. That sche schulde orden to be seyde for me. v. tricennarijs of messys.
1911. A. M. Buchanan, trans. Contempl. Life, xxi. 101. Numerous anniversary Masses are said, and the suffrages for the dead are increased by tricenaries, during which Masses are offered on thirty consecutive days.
So Tricenarious a. (rare0) = tricenary adj.
(In some mod. Dicts. misspelt tricennarious, and confused in form and sense with TRICENNIAL.)
1656. Blount, Glossogr., Tricenarious, of or belonging to thirty.
[1836. Smart, Tricennial, belonging to the number thirty; Tricennarious is less used.
1882. Ogilvie (Annandale), Tricennarious, tricennial; belonging to the term of thirty years.]