accidental(redirected from accidentalness)
Also found in: Dictionary, Thesaurus, Encyclopedia.
accidentaladjective Unexpected; by chance
accident(ak'si-dent) [L. accidere, to happen]
1. An unforeseen, unfortunate occurrence.
2. An unexpected complication of a disease or treatment.. accidental (-den'tal), adjective; accidentally
cerebrovascular accidentAbbreviation: CVA
Undesired excessive exposure to ionizing radiation.