Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
immobilisation is a noun meaning "fixation (as by a plaster cast) of a body part in order to promote proper healing". It carries 2 recorded senses.
fixation (as by a plaster cast) of a body part in order to promote proper healing
“immobilization of the injured knee was necessary”
the act of limiting movement or making incapable of movement
“the storm caused complete immobilization of the rescue team”
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 immobilisation come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.