say it: di-FEK-shuhn
defection is a noun meaning "withdrawing support or help despite allegiance or responsibility". It carries 2 recorded senses.
withdrawing support or help despite allegiance or responsibility
“his abandonment of his wife and children left them penniless”
the state of having rejected your religious beliefs or your political party or a cause (often in favor of opposing beliefs or causes)
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 defection 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.