radial /rāˈdi-əl/

1. Relating to a ray or radius
2. Along, or in the direction of, a radius or radii
3. Having rays, spokes or parts diverging from a centre
4. Arranged like spokes or radii
5. Near the radius of the arm (medicine)

1. A radiating part
2. A radial artery, nerve, engine, plate, tyre, etc

radiale /-āˈli (L ra-di-äˈle)/ noun (pl radiaˈlia)

A wrist-bone in line with the radius

rādiality /-alˈ/ noun

Radial symmetry

radialization or radialisation /rād-yəl-ī-zāˈshən/ noun

raˈdialize or raˈdialise transitive verb

To arrange radially

rāˈdially adverb

In the manner of radii or of rays

radial artery noun

The smaller branch of the brachial artery at the elbow

radial drill noun (engineering)

A large drilling machine in which the drilling head is capable of radial movement along a horizontal arm, which is itself adjustable in angle

radial engine noun

One with its cylinders radially arranged (as opposed to in line)

radial keratotomy noun

Eye surgery involving cuts around the cornea

radial-ply tyre noun

A tyre in which layers or plies of fabric in the carcass are wrapped in a direction radial to the centre of the wheel

radial symmetry noun

Symmetry about several planes intersecting in a common axis

radial tyre noun

A radial-ply tyre

radial velocity noun

The speed of motion along the observer's line of sight, esp to or from a star

radius /rāˈdi-əs/

1. A straight line from the centre to the circumference of a circle or surface of a sphere (geometry)
2. A radiating line
3. Anything placed like a radius, such as the spoke of a wheel, the movable arm of a sextant, etc
4. A radial plane of symmetry in a coelenterate
5. A line from a fixed point (eg the focus of a conic) to a point on a curve
6. The outer bone (in supine position) of the forearm in humans, or its equivalent in other animals
7. A barbule of a feather
8. The third vein of an insect's wing
9. A ray-flower or the ray-flowers of a head collectively (rare)
10. A distance from a centre, conceived as limiting an area or range

raˈdial adjective see separate entry

radius of curvature noun (geometry)

Of any curve, the radius of the circle which can be superimposed on it on the concave side

radius vector noun (pl radii vectōˈres /-rēz/)

A straight line joining a fixed point and a variable point

• take the shilling
• take the shine off
• take the shine out of
• take the sting out of
• take the sun
• take the teeth out of
• take the trouble
• take the veil
• take the wheel
• take the wind out of someone's sails
• take the word
• take the words out of someone's mouth
• take the wraps off
• take thought
• take time by the forelock
• take Time by the forelock
• take time off
• take time out
• take to
• take to flight
• take to heart
• take toll of
• take to one's bed
• take to one's heart
• take to one's heels