What causes vaginal dryness and vaginal atrophy? Vaginal atrophy is the medical term that refers to the thinning of the wall of the vagina that occurs during menopause (the time when menstrual periods have ceased) in women. Prior to menopause, the vaginal lining appears plump, bright red, and moist.
umbra. 1  shade or a shadow. 2  the dark central cone of shadow projecting from a planet or satellite on the side opposite the sun. 3  the dark central part of a sunspot. 4  Rare a phantom, or ghost. 5  Physics a perfect or complete shadow, in which no direct light is received from the source of illumination.
There are two parts to these shadows. The umbra is a central cone of darkness which tapers away from the Earth or Moon, whilst the penumbra is an outer cone of partial shadow which diverges instead of tapering. solar eclipse. The Moon's shadow cast on the Earth appears as a solar eclipse. An observer inside the circle of the penumbra will see a partial solar eclipse: the Moon shows as a bite taken out of the Sun's disc. Within the smaller, inner circle of the umbra the Sun will be entirely blotted out by the Moon.