Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
adjuvant is an adjective and noun meaning "furnishing added support". It carries 3 recorded senses.
furnishing added support
“an ancillary pump”
“an adjuvant discipline to forms of mysticism”
“The mind and emotions are auxiliary to each other”
enhancing the action of a medical treatment
“the adjuvant action of certain bacteria”
pharmacology
an additive that enhances the effectiveness of medical treatment
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 adjuvant come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.