Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
attritional is an adjective meaning "relating to or caused by attrition". It carries one recorded sense.
relating to or caused by attrition
Definitions, synonyms and semantic relations for attritional come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.