Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
rationalise is a verb meaning "structure and run according to rational or scientific principles in order to achieve desired results". It carries 5 recorded senses.
structure and run according to rational or scientific principles in order to achieve desired results
“We rationalized the factory's production and raised profits”
think rationally; employ logic or reason
“When one wonders why one is doing certain things, one should rationalize”
remove irrational quantities from
“This function can be rationalized”
mathematics
weed out unwanted or unnecessary things
“We had to lose weight, so we cut the sugar from our diet”
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 rationalise come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.