say it: pahr-TIS-uh-puhnt
participant is a noun meaning "someone who takes part in an activity". It carries 2 recorded senses.
someone who takes part in an activity
“he was a major player in setting up the corporation”
a person who participates in or is skilled at some game
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 participant 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.