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say it: i-MISH-uhn
emission is a noun meaning "the act of emitting; causing to flow forth". It carries 5 recorded senses.
the release of electrons from parent atoms
any of several bodily processes by which substances go out of the body
“the discharge of pus”
the occurrence of a flow of water (as from a pipe)
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 emission 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.