Englishfor English speakers
terrestrial
—
adjective
(= planetary)
of or relating to or characteristic of the planet Earth or its inhabitants
planetary rumblings and eructations
— L.C.Eiseley
the planetary tilt
this terrestrial ball
—
adjective
(= tellurian)
of or relating to or inhabiting the land as opposed to the sea or air
—
adjective
operating or living or growing on land
—
adjective
(= mundane)
concerned with the world or worldly matters
mundane affairs
he developed an immense terrestrial practicality
—
adjective
(= sublunary)
of this earth
transcendental motives for sublunary actions
fleeting sublunary pleasures
the nearest to an angelic being that treads this terrestrial ball
radius
Noun
—
A radius is a straight line between the centre of a circle and its circumference.
To find the area of a circle, you have to know the length of the radius.