radius

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radius

 [ra´de-us] (L.)
1. a line radiating from a center, or a circular limit defined by a fixed distance from an established point or center.
2. in anatomy, the bone on the outer or thumb side of the forearm.
grid radius grid focus.

ra·di·us

, gen. and pl.

ra·di·i

(rā'dē-ŭs, rā'dē-ī),
1. The lateral and shorter of the two bones of the forearm.
2. A straight line passing from the center to the periphery of a circle.
Synonym(s): radio- (3)
[L. spoke of a wheel, rod, ray]

radius

/ra·di·us/ (ra´de-us) pl. ra´dii   [L.]
1. a line from the center of a circle to a point on its circumference.
2. the bone on the outer or thumb side of the forearm, articulating proximally with the humerus and ulna and distally with the ulna and carpus.

radius fix´us  a straight line from the hormion to the inion.

radius

[rā′dē·əs] pl. radii
Etymology: L, ray
one of the outer, shorter bones of the forearm lying parallel to the ulna and partially revolving around it. Its proximal end is small and forms a part of the elbow joint. The distal end is large and forms a part of the wrist joint. The radius receives the insertions of various muscles and articulates with the humerus, ulna, scaphoid, lunate, and triangular bones.
enlarge picture
Radius and ulna

RADIUS

Obstetrics A study–Routine Antenatal Diagnostic Imaging with Ultrasound–involving 15,000 ♀ that evaluated fetal ultrasonography Conclusion No benefit

ra·di·us

, pl. radii (rā'dē-ŭs, -ī)
1. [TA] The lateral and shorter of the two bones of the forearm.
2. A straight line passing from the center to the periphery of a circle.
[L. spoke of a wheel, rod, ray]

radius

One of the two forearm bones, the other being the ULNA. The radius is on the thumb side and lies parallel to the ulna when the palm is facing forward. When the hand is rotated so that the thumb turns inward, the upper end of the radius rotates on a boss on the lower end of the upper arm bone (HUMERUS) but the lower end crosses over the ulna.

radius

the anterior bone in the lower part of the forelimb of vertebrates. see PENTADACTYL LIMB.
Figure 1: The nervous system.

radius

the smaller of the two forearm bones. Articulates at the elbow with the humerus and at the wrist with the carpal bones. adj radial in descriptions of forearm structures, on or towards the side of the radius, i.e. the thumb side. Figure 1.

ra·di·us

, pl. radii (rā'dē-ŭs, -ī)
1. [TA] Lateral and shorter of two bones of forearm.
2. Straight line passing from center to periphery of a circle.
[L. spoke of a wheel, rod, ray]

radius

pl. radii [L.]
1. a line radiating from a center, or a circular limit defined by a fixed distance from an established point or center.
2. one of the two long bones of the forearm that extends from the lateral side of the elbow to the medial side of the wrist or carpus. See also Table 10.

radius curvus syndrome
see curvus.
References in periodicals archive ?
Typical conditions for curving simulations Input parameters Recommended value or conditions Track design Typical curve radius including transitions and the smallest curve radius on the network Track According to the specification and conditions irregularity on the railway network; measured track irregularity if possible Wheel/rail Nominal wheel and rail profiles, nominal contact geometry gauge, gauge widening in tight curves according to specification; influence analysis of worn wheel and rail profiles, mainly for self-steering wheel sets Wheel/rail Nonlinear theory, friction coefficient creep-force law 0.
The curves used to examine the impact of gauge width upon rail head side wearing were divided into five groups according to the curve radius R:
The gauge should be widened when the curve radius is less than 650 m.
This is a simple and easy to apply model that only requires knowledge of the curve radius, which are easily obtained from cartography, orthophotos or satellite imagery.
73), which uses curve radius and radius of the preceding curve as variables in addition to sight distance, was chosen (Eq (6)).
AS2]--the coefficients expressing average costs to execute minor or capital improvements within the curve radius of the railway track on the route.
30m : - Ground clearance: at least 65mm : - Catenary Voltage: 600V DC and 750V DC, each tolerances according to VDE +20% / -30% : - Minimum curve radius on street flush roadbed: 18m : - Track inclination max: 7