…a round plane figure whose boundary (the circumference) consists of points equidistant from a fixed point (the center)…
…an area of standing crops that has been flattened in the form of a circle or more complex pattern. No general cause of crop circles has been identified although various natural and unorthodox explanations have been put forward; many of the circles are known to have been hoaxes…
…the parallel of latitude 66° 33ʹ north of the equator. It marks the northernmost point at which the sun is visible on the northern winter solstice and the southernmost point at which the midnight sun can be seen on the northern summer solstice…
…a country dance or folk dance, typically following a traditional set of steps, in which dancers form a circle…
…a circle on the surface of a sphere that lies in a plane passing through the sphere’s center. As it represents the shortest distance between any two points on a sphere, a great circle of the earth is the preferred route taken by a ship or aircraft…
…an exclusive group close to the center of power of an organization or movement, regarded as elitist and secretive…
…a small group of people privileged to receive confidential information or make important decisions…
…an imaginary circle concentric to a toothed wheel, along which the pitch of the teeth is measured…
…a circle on the surface of a sphere whose plane does not pass through the sphere’s centre…
…a megalithic monument of a type found mainly in western Europe, consisting of stones, typically standing stones, arranged more or less in a circle…
…a group of empiricist philosophers, scientists, and mathematicians active in Vienna from the 1920s until 1938, including Rudolf Carnap and Kurt Gödel. Their work laid the foundations of logical positivism…
…a telescope mounted so as to move only on a north-south line, for observing the transit of celestial objects across the meridian…
…a group of employees that meets regularly to consider ways of resolving problems and improving production in their organization…
…an elongated semicircle on a hockey field in front of the goal, from within which the ball must be hit in order to score…
…a road junction at which traffic moves in one direction around a central island…
…the smallest circle in which a vehicle or vessel can turn without reversing…
…a great circle of the celestial sphere whose diameter runs from zenith to nadir…
…a sequence of reciprocal cause and effect in which two or more elements intensify and aggravate each other, leading inexorably to a worsening of the situation…
…a recurring cycle of events, the result of each one being to increase the beneficial effect of the next…
…a small circular area or enclosure at a racetrack where the winning horse and jockey are brought to receive their awards and have photographs taken…
…the parallel of latitude 66° 33ʹ south of the equator. It marks the southernmost point at which the sun is visible on the southern winter solstice and the northernmost point at which the midnight sun can be seen on the southern summer solstice…
…(of a group) unite in defense of a common interest…
…return to a past position or situation, especially in a way considered to be inevitable…
…construct a square equal in area to a given circle (a problem incapable of a purely geometric solution)…
…move in a wide loop back toward one’s starting point…
…the situation has returned to what it was in the past, as if completing a cycle…
