say it: SUHK-shuhn
suction is a noun and verb meaning "a force over an area produced by a pressure difference". It carries 4 recorded senses.
a force over an area produced by a pressure difference
the act of sucking
remove or draw away by the force of suction
“the doctors had to suction the water from the patient's lungs”
empty or clean (a body cavity) by the force of suction
“suction the uterus in an abortion”
operation
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 suction 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.