A type of loudspeaker enclosure that uses the sound from the rear side of the diaphragm to increase the efficiency of the system at low frequencies, as compared to a typical closed-box loudspeaker or an infinite baffle mounting.

(geometry) An angle greater than 180 degrees but less than 360 degrees.

plural of reflex angle

A physiological nervous system response to increased intracranial pressure that results in the triad of increased blood pressure, irregular breathing, and a reduction of the heart rate.

A camera that permits the photographer to view the exact image that will be captured, unlike earlier viewfinder cameras.

(neuroanatomy, neurophysiology) The neural pathway that mediates a reflex.

A statement which refers to itself.

Raised skin, usually caused by the involuntary erection of hairs on the neck or arms caused by cold, excitement, or fear.

A response, to a stimulus, that has been acquired by operant conditioning.

A verb whose subject and direct object are the same.