say it: uh-TEH-nyoo-ayt
attenuate is a verb and adjective meaning "weaken the consistency of (a chemical substance)". It carries 3 recorded senses.
reduced in strength
“the faded tones of an old recording”
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 attenuate 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.