Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
dissimilate is a verb meaning "become dissimilar by changing the sound qualities". It carries 3 recorded senses.
become dissimilar by changing the sound qualities
“These consonants dissimilate”
phonetics
make dissimilar; cause to become less similar
become dissimilar or less similar
“These two related tribes of people gradually dissimilated over time”
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 dissimilate come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.