/ˌɪnfɪnˈteɹɪ/ i-nfin-TEER-ee

Definitions

1. adjective

relating to or involving infinite processes or infinite sets

“The infinitary logic used in this mathematical proof is a complex and abstract concept.”

2. noun

a branch of mathematics dealing with infinite sets and their properties

“Infinitary theory has numerous applications in modern mathematics and computer science.”