It is also obvious, and proved by experiment, that the rotatory motions observed in the hand proceed from the rotatory motions of theradius.
(zoology) The lighter bone (or fused portion of bone) in the forelimb of an animal.
(entomology) One of the major veins of the insect wing, between thesubcosta and themedia; the vein running along thecostal edge of thediscal cell.
(geometry) A line segment between any point of acircle or sphere and its center.
Fatima claims to have visited all the bars within a five-mileradius of her Manhattan apartment.
1994, Viacheslav V. Nikulin, Igor R. Shafarevich, translated by Miles Reid,Geometries and Groups, Springer,page194:
We start with spherical geometries. The two geometries on spheres ofradiuses R1 and R2 are obviously identical if R1 = R2; moreover, the converse also holds.
2016, Jubee Sohn, Ho Seong Hwang, Margaret J. Geller, Antonaldo Diaferio, Kenneth J. Rines, Myung Gyoon Lee, Gwang-Ho Lee, “Compact Groups of Galaxies with Complete Spectroscopic Redshifts in the Local Universe”, inJKAS[2], volume2015:
The velocity dispersions of early- and late-type galaxies in compact groups change little with groupcentricradius; theradii sampled are less than kpc, smaller than theradii typically sampled by members of massive clusters of galaxies.
1998, Dieter Schuocker,Handbook of the Eurolaser Academy, Springer Science & Business Media,→ISBN, page51:
This contribution reduces with increasing distance p from the emitting surface element dA, due to conservation of energy, as the wave energy distributed across the spherical wave front remains constant, while theradius increases during ...
Anything resembling a radius, such as thespoke of awheel, the movable arm of asextant, or one of the radiating lines of a spider's web.
1674,Robert Hooke,Animadversions on the Firſt Part of the Machina Coelestis of the[…] Aſtronomer Johannes Hevelius[…][3], page43:
[…] I can do more with a Quadrant, Sextant or Octant, of 1 footRadius, furniſhed with Teleſcopical Sights and Screws, then[sic] can poſſibly be done with any other Inſtrument, furniſhed only with Common Sights, though 10, 20, 30, nay threeſcore footRadius;[…]
^De Vaan, Michiel (2008) “radius”, inEtymological Dictionary of Latin and the other Italic Languages (Leiden Indo-European Etymological Dictionary Series; 7), Leiden, Boston: Brill,→ISBN,page512
^ Tucker, T.G., Etymological Dictionary of Latin, Ares Publishers, 1976 (reprint of 1931 edition).
“radius”, inCharlton T. Lewis and Charles Short (1879)A Latin Dictionary, Oxford: Clarendon Press
“radius”, inCharlton T. Lewis (1891)An Elementary Latin Dictionary, New York: Harper & Brothers
"radius", in Charles du Fresne du Cange’sGlossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)