Date: | 1500-1600 |

Language: | Latin |

Origin: | 'ray, radius' |

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ra‧di‧us plural radii [countable]

1TM the distance from the centre to the edge of a circle, or a line drawn from the centre to the edge [↪ diameter]

2TM an area that covers a particular distance in all directions from a central point : ** within a 10-mile/200-metre etc radius**

The shock of the explosion was felt over a radius of forty miles.

There are more than a dozen golf courses within a 15-mile radius of St Andrews.

3 technicalHBH the outer bone of the lower part of your arm

Definition of radius from the Longman Dictionary of Contemporary English within

the topic MATHS

the topic MATHS

angle
arc
area
axis
base
C
calculator
constant
contain
cos
curve
cut
diameter
dimension
domain
equal(a)
equal(v)
express
expression
face
figure
formula
function
graph
grid
log
math
mathematics
matrix
mean
minute
multiply
N
number
parallel
percentage
pi
plane
plus(n)
plus(a)
plus sign
power
proof
ratio
root
scale
section
segment
solid(a)
solid(n)
solution
solve
square(a)
square(n)
square(v)
square(a)
sum
term
value
variable
vector
vertical
volume
work
X

Show all entries from Topic: MATHS

Show all entries from Topic: MATHS