sec
/sɛk/
Proposed by a contributor, not yet supported by evidence.
Also seen as: secs
Meaning · English
Second, ¹⁄₆₀ of a minute.
NounRegister: informal
Examples
It is not permissible to use abbreviations for unit symbols or unit names, such as sec (for either s or second), sq. mm (for either mm² or square millimetre), cc (for either cm³ or cubic centimetre), or mps (for either m/s or metre per second).
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Common questions
What does “sec” mean?
Second, ¹⁄₆₀ of a minute.
Is “sec” formal or informal?
sec is generally informal.