NTP
Abbreviation with 3 meanings
| Stands for | Normal temperature and pressure |
|---|---|
| Meanings | 3 |
| Categories | Science & Engineering, Technology & Computing, Law & Legal |
NTP has three meanings. The most common are Normal temperature and pressure (chemistry) and Network Time Protocol (networking); it can also stand for Notice to proceed.
Meanings of NTP at a glance
| # | NTP stands for | Context |
|---|---|---|
| 1 | Normal temperature and pressure | Science & Engineering › Chemistry |
| 2 | Network Time Protocol | Technology & Computing › Networking |
| 3 | Notice to proceed | Law & Legal › Contract |
1. Normal temperature and pressure
Science & Engineering · Chemistry Abbreviations
Gas reference conditions of 20 °C (293.15 K) and 1 atmosphere (101.325 kPa), common in the United States for rating compressors, gas flow and air quality. One mole of ideal gas occupies about 24.06 liters at NTP.
Example: Flow is expressed in liters per minute at NTP, 20 °C and 1 atm.
Definitions vary between standards bodies and industries; in Europe the "normal cubic meter" (Nm3) is usually referenced to 0 °C. Gas-flow specifications therefore state their reference conditions explicitly, and volumes should be converted only after checking which convention a data sheet uses.
2. Network Time Protocol
Technology & Computing · Networking Abbreviations
Synchronizes computer clocks over a network, usually to within milliseconds of Coordinated Universal Time, by exchanging timestamps with a hierarchy of time servers. Accurate time matters for logs, certificates, authentication and financial transactions.
Example: Kerberos logins failed because the server's clock drifted; point it at the NTP pool.
Designed by David L. Mills at the University of Delaware and first described in 1985; NTPv4 is RFC 5905 (2010). Servers are ranked by stratum: stratum 0 is a reference clock such as GPS, and stratum 1 servers attach directly to one. NTP uses UDP port 123, and poorly configured servers have been abused for amplification DDoS attacks.
3. Notice to proceed
Law & Legal · Contract Abbreviations
Written notice from an owner or government agency authorizing the contractor to begin work, which usually starts the contract performance period. Completion deadlines and liquidated damages are often measured from the NTP date.
Example: Contract time is 540 calendar days from the date of the NTP.
Projects sometimes issue a limited notice to proceed (LNTP) authorizing early work, such as ordering long-lead equipment, before financing closes. A delayed NTP can give the contractor a claim for additional time or money. The term is standard in public works and energy projects.
Related abbreviations
More chemistry abbreviations
- NaCl – Sodium chloride
- NaOH – Sodium hydroxide
- NH3 – Ammonia
- NMR – Nuclear magnetic resonance
- O3 – Ozone
- PAH – Polycyclic aromatic hydrocarbon
- PC – Polycarbonate
- PCB – Polychlorinated biphenyl
See all 106 chemistry abbreviations →
More networking abbreviations
- NFS – Network File System
- NFV – Network functions virtualization
- NOC – Network operations center
- NS – Name server (record)
- OSI – Open Systems Interconnection (model)
- OSPF – Open Shortest Path First
- P2P – Peer-to-peer
- PAN – Personal area network
See all 113 networking abbreviations →
This entry is for general education and is not legal advice. Abbreviation use varies between institutions; always confirm in context.