RE

Symbol

 * 1)  Earth radius: the radius of planet Earth, regarded as a unit of measurement.
 * 2)  The radius of the Earth specifically.

Synonyms

 * R🜨, R♁

Preposition

 * 1) Regarding, re.

Proper noun

 * 1)  a regiment in the British Army.

Noun

 * 1)   the class of decision problems for which a 'yes' answer can be verified by a Turing machine in a finite amount of time.