The halogens all form binary compounds with hydrogen, and these compounds are known as the hydrogen halides: hydrogen fluoride (HF), hydrogen chloride (HCl), hydrogen bromide (HBr), hydrogen iodide (HI), and hydrogen astatide (HAt).
finger stick. 1  the act of puncturing the tip of the finger to obtain a small sample of capillary blood. In some procedures the hand may be first immersed in warm water for 10 minutes to arterialize the capillary blood or give it characteristics similar to those of arterial blood.
Swimmer's ear is an infection of the ear canal. If you stick your finger in your ear, you're feeling a little of the ear canal. But if you have swimmer's ear, and you stick your finger in your ear â YOW! Let's find out more about this painful type of ear infection, which often affects swimmers.