novennial

English

Etymology

From novennium (“9-year period”) + -al, q.v.

Adjective

novennial (not comparable)

Of or relating to a 9-year period.

Synonyms

enneaeteric, enneatic

References

“novennial, adj.”, in OED Online ⁠, Oxford, Oxfordshire: Oxford University Press, 2022.
“novennial”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.

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