specific impedance; especially the ratio of a pressure phasor associated with a wave at any given point in a medium to the velocity phasor at that point.

simple past tense and past participle of impede

plural of radiation impedance

(object-oriented programming) A set of conceptual and technical difficulties that are often encountered when a relational database is being served by an object-oriented application program, particularly because objects or class definitions must be mapped to database tables defined by a relational schema.

plural of impedance mismatch

(electricity) a coil of wire designed to provide impedance in an electric circuit

plural of impedance coil

(acoustics) The impedance of any vibrating solid or fluid that radiates sound in the surrounding medium.

(medicine) A technique in which the volume of segments of the body can be continuously measured via electrical impedance; used to study the cardiovascular system and other physiological functions.

A medical imaging technique which uses surface electrodes to infer the electrical conductivity and electrical permittivity of a two-dimensional slice of the body.