(anatomy) The part of blood circulation which carries oxygen-depleted blood away from the heart, to the lungs, and returns oxygenated blood back to the heart.

(anatomy) The part of blood circulation which carries oxygenated blood away from the heart, to the body, and returns deoxygenated blood back to the heart.

A photonic device that integrates multiple information signals which are composed of light of various wavelengths.

plural of circular saw

Alternative spelling of semicircle

Alternative spelling of semicircular

(geometry) A portion of a circle enclosed by two radii and an arc.

Alternative spelling of circular sector

An electrical circuit that has two or more components that are connected in parallel.

(pharmacology) A particular narcotic painkiller.