say it: dahy-A-stuh-lee
diastole is a noun meaning "the widening of the chambers of the heart between two contractions when the chambers fill with blood". It is pronounced /daɪˈæstəˌli/ — dahy-A-stuh-lee. It carries one recorded sense.
the widening of the chambers of the heart between two contractions when the chambers fill with blood
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 diastole come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.