What Is a Paronychia (Nail Infection)? An infection that develops along the edge of the fingernail or toenail is called a paronychia (pear-ah-NIK-ee-ah). It is the most common hand infection and, if left untreated, can progress to a more severe infection of the entire finger or toe.
reflex action. the involuntary functioning or movement of any organ or body part in response to a particular stimulus. The function or action occurs immediately, without the involvement of the will or consciousness. reflex action.
Definition of REFLEX for Kids. 1. : an action or movement that is made automatically without thinking as a reaction to a stimulus.2. an action or movement of the body that happens automatically as a reaction to something. : something that you do without thinking as a reaction to something.