say it: uh-fil-ee-AY-shuhn
affiliation is a noun meaning "a social or business relationship". It carries 2 recorded senses.
a social or business relationship
“a valuable financial affiliation”
“he was sorry he had to sever his ties with other members of the team”
“many close associations with England”
the act of becoming formally connected or joined
“welcomed the affiliation of the research center with the university”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for affiliation come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.