A dermatologist is a doctor who has extensive training and knowledge of the skin, scalp, hair and nails and treats conditions that affect those areas. These doctors will evaluate any abnormality, blemish or lesion on the skin in order to determine the cause and will determine a course of treatment.
Definition of rampart for English Language Learners. : a tall, thick stone or dirt wall that is built around a castle, town, etc., to protect it from attacks.
Pegmatite containing lepidolite, tourmaline, and quartz from the White Elephant Mine in the Black Hills, South Dakota. A pegmatite is a holocrystalline, intrusive igneous rock composed of interlocking phaneritic crystals usually larger than 2.5 cm in size (1 inch); such rocks are referred to as pegmatitic. The word pegmatite derives from Homeric Greek, ÏÎ®Î³Î½ÏÎ¼Î¹ (pegnymi), which means âto bind togetherâ, in reference to the intertwined crystals of quartz and feldspar in the texture known as graphic granite.