Triage is the process of deciding how seriously ill or injured a person is, so that the most serious cases can be treated first. Learn how to pronounce, use and collocate this word in healthcare contexts with Oxford Advanced Learner's Dictionary. There are four meanings listed in OED's entry for the noun triage , one of which is labelled obsolete. See ‘ Meaning & use’ for definitions, usage, and quotation evidence. Triage is the process of quickly examining sick or injured people to determine their priority for treatment. Learn the origin, synonyms, sentences, and examples of triage in different contexts. Triage is the process of quickly examining patients or problems to decide which ones are the most serious and must be dealt with first. Learn how to use this word in different contexts, see related words and phrases, and hear the pronunciation.