(politics, philosophy) In political philosophy, the negation of rule by "regency", or hierarchical "government". The absence of a "ruling class". A society with the absence of imposition or coercion; one of voluntary order.

Of or pertaining to peripheral body parts, such as toes and fingers.

(organic chemistry) Synonym of acrolein

(anatomy, rare) The vascular areas of the body most removed from the heart.

plural of acracy

(pathology) A foetus in which the cranium is absent or not properly developed

(astronomy, historical) Beta Scorpii, a multiple star system in the southern zodiac constellation of Scorpius. / (astronomy) The β Scorpii Aa component of this star system.

Any animal of the class Acrania

plural of acraniate

That lacks a cranium