1 A badge or insignia consisting of stripes meeting at an angle, worn on the sleeve of a military or police uniform to indicate rank, merit, or length of service. 2  n. Heraldry A device shaped like an inverted V.  n.
In physiology, a stimulus (plural stimuli) is a detectable change in the internal or external environment. The ability of an organism or organ to respond to external stimuli is called sensitivity.When a stimulus is applied to a sensory receptor, it normally elicits or influences a reflex via stimulus transduction.ne internal stimulus that causes hormone release is blood pressure. Hypotension, or low blood pressure, is a large driving force for the release of vasopressin, a hormone which causes the retention of water in the kidneys.
The difference between an external stimulus and an  internal stimulus is that an external  stimulus is a stimulus that comes from  outside an organism.But an internal  st â¦ umulus is a stimulus that comes from  inside an organism.n example of an external stimulus is a painful prick (and any other stimulus that happens OUT side the organism). The organism could respond by pulling away from the pain ca â¦ used by the stimuli.