Push notifications provide a way for web services to push data to users' devices without waiting for a game to initiate the web request. Push notifications can be sent from any source that can make a web request: a server, a desktop PC, even another Windows Phone.
Medical Definition of Teratogen. Teratogen: Any agent that can disturb the development of an embryo or fetus. Teratogens may cause a birth defect in the child. Or a teratogen may halt the pregnancy outright. The classes of teratogens include radiation, maternal infections, chemicals, and drugs.
The central nervous and skeletal systems tend to be most affected by teratogens. Cigarette components, alcohol, cocaine, warfarin, ACE inhibitors, and Accutane are all teratogens that affect fetal development. Key Terms. teratogen: Any agent or substance that can cause embryonic malformations or birth defects.