R may be the initial of a surname or a code name. Or it may be meaningless, just an ordinary symbol.

The net name means R:

1. The net term "R" means the sun.

2. Medical R refers to people's breathing frequency. For example, the r of a normal person is 16 ~ 2 beats/min.

3. R of computer is an editing language for statistics. Please refer to R language.

4. R in architecture is a non-metric unit of thermal resistance.

5. The r of the calendar is often used as the abbreviation of Thursday in English to distinguish Tuesday with the abbreviation of T..

6. The R in chess stands for Bishop, which is equivalent to the image of China chess.

other meanings:

circled r is the mark of "registered trademark", which means that the trademark has been applied for registration in the State Trademark Office and has been examined and approved by the Trademark Office to become a registered trademark. R in the circle is the initial letter of English register registration. ?

in some cases (for example, in some technical specifications or computer self-checking programs), the initial letter "r" of a Registered Trademark is not circled, but parentheses are directly placed around it, that is, (r).