R0 or R00 may refer to:
*
.r00, a software file extension
*
Brussels Ring
The Brussels Ring ( or ; ), numbered R0, is a ring road surrounding the Brussels-Capital Region, as well as other smaller towns south of Brussels. It is about long, with two or three lanes in each direction. While most of it is classified a ...
, a motorway in Belgium
*
Haplogroup R0, formerly known as haplogroup pre-HV
* ''R''
0,
Basic reproduction number
In epidemiology, the basic reproduction number, or basic reproductive number (sometimes called basic reproduction ratio or basic reproductive rate), denoted R_0 (pronounced ''R nought'' or ''R zero''), of an infection is the expected number ...
in epidemiology
* ''R''
0,
Net reproduction rate
In population ecology and demography, the net reproduction rate, ''R''0, is the average number of offspring (often specifically daughters) that would be born to a female if she passed through her lifetime conforming to the age-specific fertility ...
in population ecology and demography
*
Samsung YP-R0, a digital audio player
See also
*
RO (disambiguation)
*
0R (disambiguation)
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