A Honor Society of Nursing (STTI) answered. Ovulation usually takes place about halfway through a normal 28-day menstrual cycle. After ovulation, the body produces high levels of the hormones progesterone and estrogen. The hormones thicken the lining of the uterus in anticipation of a fertilized egg. If no fertilization occurs after ovulation, after about 14 days the lining of the uterus is shed to begin menstruation.
Freebase(0.00 / 0 votes)Rate this definition: Safety data sheet. A safety data sheet, material safety data sheet, or product safety data sheet is an important component of product stewardship and occupational safety and health.
MSDS Definition: MSDS is an acronym for Material Safety Data Sheet. A MSDS is a written document that outlines information and procedures for handling and working with chemicals. Current MSDS documents contain physical and chemical property information, potential hazard information, emergency procedures, and manufacturer contact information. Also Known As: Material Safety Data Sheet.