— Also termed industrial disease. [Cases: Workers’ Compensation 547–551. C.J.S. Workmen’s Compensation §§ 315–324.]
“Certain diseases and infirmities which develop gradually and imperceptibly as a result of engaging in particular employments and which are generally known and understood to be usual incidents or hazards thereof, are distinguished from those having a traumatic origin, or otherwise developing suddenly and unexpectedly, by the terms ‘occupational,’ and ‘industrial.’ ” 82 Am. Jur. 2d Workers’ Compensation § 326 (1992).