external carotid plexus n.
An autonomic plexus that is formed by the external carotid nerves, surrounds the external carotid artery, and gives origin to a number of secondary plexuses along the branches of the external carotid artery.
- External carotid steal syndrome
external carotid steal syndrome n. Brief ischemic attacks that are marked by dizziness and loss of balance and are caused by insufficient blood supply to the vertebral and basilar arteries.
[ik-stur-nl-kuh m-buhs-chuh n] /ɪkˈstɜr nl kəmˈbʌs tʃən/ adjective 1. noting or pertaining to an engine, as a steam engine, in which fuel ignition takes place outside the cylinder, turbine, or the like, in which heat energy is transformed into mechanical force.
- External-combustion engine
noun 1. a heat engine in which the working fluid is heated in an external boiler or heat exchanger and is thus isolated from the process of fuel combustion
noun 1. struggle between a literary or dramatic character and an outside force such as nature or another character, which drives the dramatic action of the plot: external conflict between Macbeth and Macduff. 2. struggle between a person and an outside force: external conflict between parents and children. noun in literature, a struggle between the […]