CARDINAL a.
vertical circle, north, south east, and west. (b) (Astrol.) The rising and setting of the sun, the zenith and nadir. -- Cardinal signs (Astron.) Aries, Lidra, Cancer, and Capricorn. -- Cardinal teeth (Zoöl.), the central teeth of bivalve shell. See Bivalve. -- Cardinal veins (Anat.), the veins in vertebrate embryos,…
CENTRIPETAL a.
, a force whose direction is towards a center, as in case of a planet revolving round the sun, the center of the system, See Centrifugal force, under Centrifugal. -- Centripetal impression (Physiol.), an impression (sensory) transmitted by an afferent nerve from the exterior of the body inwards, to the central organ.…