A chemical or physical agent that affects the ability of males and females to reproduce normally, e.g. causing infertility, impotence, spontaneous abortion, or birth defects
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}