nonary noun & adjective. ['nǝʊnǝri] M17.
[Irreg. from Latin nonus ninth + -ARY¹, after denary etc.]
A. noun.
1. A group of nine. M17.

2. A fever recurring every eighth (by inclusive reckoning every ninth) day. Long rare or obsolete. M18.
b. adjective. Math. Designating or pertaining to a scale of numeration having a base of nine. L19.

[TahlilGaran] English Dictionary ▲