Carotid Angiography Carotid angiography (an-jee-OG-ra-fee) is a special type of x ray. This test may be used if the ultrasound results are unclear or don't give your doctor enough information. For this test, your doctor will inject a substance (called contrast dye) into a vein, most often in your leg.
Dawn is defined as the first light of a new day or the beginning of something. An example of dawn is around 6am in September in California. An example of dawn is the beginning of the Computer Age. The definition of dawn is to begin to be understood, daylight or to appear.
The noun dawn refers to the first light of day, or the first time period, like the dawn of a new era, which occurs when a new president takes office. Not just the beginning of a day, the noun dawn can refer to any beginning, like the dawn of the Internet era. As a verb, dawn can mean become light or become clear, like when it dawns on you that you left an important paper at home today. In that case, you can suddenly see what you did wrong, like at the dawn of a new day, when it is no longer dark and you can see, literally. Definitions of dawn.