-ary

Back-formation from unary and similar, from Middle English -arie, from Latin adjective suffixes -āris and -ārius; compare related -arian, and -adic. Doublet of -eer and -yer.

• (Received Pronunciation) IPA^(key): /ə.ɹi/, /.ɹi/
• (General American) IPA^(key): /ə.ɹi/, /ɛɹ.i/

-ary

1. Of or pertaining to; adjective suffix appended to various words, often nouns, to make an adjective form. Often added to words of Latin origin, but used with other words also.

   order, ordinary

   Synonyms: -al, -ar, -ese, -ic, -id, -ish, -like, -oid, -ory, -ous, -y

2. (mathematics) Having the specified arity.
   • 1927, A. D. Campbell, “The discriminant of the m-ary quadratic in the Galois fields of order 2ⁿ”, in Annals of Mathematics, Second Series 29:1-4:
   • 2007, Philippe Leroux, “A simple symmetry generating operads related to rooted planar m-ary trees and polygonal numbers”, in Journal of Integer Sequences, 10:4:

   Synonym: -adic

• Appendix:English arities and adicities

• Ayr, RYA, Ray, ayr, ra'y, ray, rya, yar, γ ray, γ-ray