adjective
Etymology: from present participle of isolate (I)
: of, relating to, or being a language in which each word typically expresses a distinct idea and in which variations in parts of speech and syntactical relations are determined almost exclusively by the order in which words are joined and by the use of particles so that a sentence typically consists of a string of formally independent words
an isolating language
the isolating form of speech of the Sino-Tibetan languages
— distinguished from agglutinative and inflectional ; compare analytic 4