RIR
Abbreviation with 2 meanings
| Stands for | Reps in reserve |
|---|---|
| Meanings | 2 |
| Categories | Sports, Technology & Computing |
RIR has two meanings. It stands for Reps in reserve (fitness and exercise) or Regional internet registry (networking).
Meanings of RIR at a glance
| # | RIR stands for | Context |
|---|---|---|
| 1 | Reps in reserve | Sports › Fitness and Exercise |
| 2 | Regional internet registry | Technology & Computing › Networking |
1. Reps in reserve
Sports · Fitness and Exercise Abbreviations
Number of additional repetitions a lifter could have done before failure at the end of a set. Training to "2 RIR" means stopping two reps short of failure.
Example: Last set: 10 reps at 1 RIR, then move on to accessories.
RIR is the inverse of the strength-training RPE scale: RPE 9 equals 1 RIR. Research suggests most muscle growth occurs in sets taken within a few reps of failure. Beginners tend to underestimate how many reps they have left.
2. Regional internet registry
Technology & Computing · Networking Abbreviations
One of five organizations that allocate IP addresses and autonomous system numbers within a world region: AFRINIC (Africa), APNIC (Asia-Pacific), ARIN (North America), LACNIC (Latin America and the Caribbean) and RIPE NCC (Europe, the Middle East and Central Asia).
Example: The hosting company applied to its RIR for a block of IPv6 addresses.
RIRs receive large blocks from IANA and allocate them to ISPs and organizations. Their public WHOIS databases show who holds a given address range. ARIN and RIPE NCC ran out of freely available IPv4 space in 2015 and 2019 respectively, leaving waiting lists and transfer markets.
Related abbreviations
More fitness and exercise abbreviations
- PPL – Push/pull/legs
- PT – Personal trainer
- RDL – Romanian deadlift
- RHR – Resting heart rate
- ROM – Range of motion
- RPE – Rate of perceived exertion
- TDEE – Total daily energy expenditure
- TUT – Time under tension
See all 35 fitness and exercise abbreviations →