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radius

ra·di·us / ˈrādēəs/ • n. (pl. ra·di·i / ˈrādēˌī/ or ra·di·us·es) 1. a straight line from the center to the circumference of a circle or sphere. ∎  a radial line from the focus to any point of a curve. ∎  the length of the radius of a circle or sphere. ∎  a specified distance from a center in all directions: there are plenty of local pubs within a two-mile radius. 2. Anat. the thicker and shorter of the two bones in the human forearm. Compare with ulna. ∎  Zool. the corresponding bone in a vertebrate's foreleg or a bird's wing. ∎  Zool. (in an echinoderm or coelenterate) any of the primary axes of radial symmetry. ∎  Entomol. any of the main veins in an insect's wing.

radius

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RADIUS

RADIUS Acronym for Remote Access Dial-In User Service. A protocol for transmitting authentication requests and responses and associated accounting records across an IP network. RADIUS is frequently used by Internet Service Providers to carry login requests from a modem or other network access device to a central user authentication database. RADIUS is not itself an authentication protocol, but supports a wide range of different authentication methods.

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radius

radius (in anatomy) The smaller of the two bones in the lower section of the forelimb of a tetrapod vertebrate (compare ulna). The radius articulates with some carpal bones and the ulna at the wrist and with the humerus at the elbow. This sophisticated articulation of the radius enables humans (and some other animals) to twist the forearm (see pronation; supination).

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radius

radius †staff of a cross XVI; thicker and shorter bone of the forearm; straight line drawn from the centre of a circle to the circumference XVII; (techn.) rod, bar, ray XVIII. — L. radius staff, spoke, ray, radius of a circle, of the arm, etc.

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radius

radius (ray-di-ŭs) n. the outer and shorter bone of the forearm (compare ulna). It partially revolves about the ulna, permitting pronation and supination of the hand.
radial adj.

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radius

radius In anatomy, one of the two forearm bones, extending from the elbow to the wrist. The radius rotates around the ulna, permitting the hand to rotate and be flexible.

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radius

radius
1. In tetrapods, the pre-axial bone of the fore limb.

2. In insects, a prominent vein in the anterior of the wing.

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radius

radius In tetrapods, the bone of the fore limb on the side of the first digit (in humans, the thumb). Compare ULNA.

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radius

radius, in anatomy: see arm.

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radius

radiusBierce, fierce, Pearce, Peirce, pierce, tierce •Fabius, scabious •Eusebius •amphibious, Polybius •dubious • Thaddeus • compendious •radius • tedious •fastidious, hideous, insidious, invidious, perfidious •Claudiuscommodious, melodious, odious •studious • Cepheus •Morpheus, Orpheus •Pelagius • callipygous • Vitellius •alias, Sibelius, Vesalius •Aurelius, Berzelius, contumelious, Cornelius, Delius •bilious, punctilious, supercilious •coleus • Julius • nucleus • Equuleus •abstemious •Ennius, Nenniuscontemporaneous, cutaneous, extemporaneous, extraneous, instantaneous, miscellaneous, Pausanias, porcellaneous, simultaneous, spontaneous, subcutaneous •genius, heterogeneous, homogeneous, ingenious •consanguineous, ignominious, Phineas, sanguineous •igneous, ligneous •Vilnius •acrimonious, antimonious, ceremonious, erroneous, euphonious, felonious, harmonious, parsimonious, Petronius, sanctimonious, Suetonius •Apollonius • impecunious •calumnious • Asclepius • impious •Scorpius •copious, Gropius, Procopius •Marius • pancreas • retiarius •Aquarius, calcareous, Darius, denarius, gregarious, hilarious, multifarious, nefarious, omnifarious, precarious, Sagittarius, senarius, Stradivarius, temerarious, various, vicarious •Atreus •delirious, Sirius •vitreous •censorious, glorious, laborious, meritorious, notorious, uproarious, uxorious, vainglorious, victorious •opprobrious •lugubrious, salubrious •illustrious, industrious •cinereous, deleterious, imperious, mysterious, Nereus, serious, Tiberiuscurious, furious, injurious, luxurious, penurious, perjurious, spurious, sulphureous (US sulfureous), usurious •Cassius, gaseous •Alcaeus • Celsius •Theseus, Tiresias •osseous, Roscius •nauseous •caduceus, Lucius •Perseus • Statius • Propertius •Deo gratias • plenteous • piteous •bounteous •Grotius, Photius, Proteus •beauteous, duteous •courteous, sestertius •Boethius, Prometheus •envious • Octavius •devious, previous •lascivious, niveous, oblivious •obvious •Vesuvius, Vitruviusimpervious, pervious •aqueous • subaqueous • obsequious •Dionysius

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RADIUS

RADIUS (ˈreɪdɪəs) Religious Drama Society of Great Britain

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