Dip Tolerance (Lighting) : With regard to outdoor lighting, the percentage of instantaneous voltage variation from normal that is required to extinguish a light source
Young & Company Electric Power Products and Related Engineering Services, Glossary of Electrical Terms, http://www.youngco.com/young2.asp?ID=4&Type=3, CA., USA 2001. (Electr Sfty - Amer) {514}