R 2
the length of a line segment between the center and circumference of a circle or sphere.
R 3
the 18th letter of the Roman alphabet
R 5
a unit of radiation exposure
The R Language
In every computer language variables provide a means of accessing the data stored in memory. R does not provide direct access to the computer's memory but rather provides a number of specialized data structures (objects). These objects are referred to through symbols or variables.
In R, however, the symbols are themselves objects and can be manipulated in the same way as any other object. This is different from many other languages and has wide ranging effects.
R
...the symbol for resistance
....the symbol for royalty
.....the Rook in Chess
......a Censorship rating
.......the abbreviation for Radius
........in Quantum General Relativity
