grav
UK[ɡræv]US[ɡræv]
n
A unit of acceleration equal to that produced by gravity at the earth's surface, approximately 9.8 meters per second per second.
n
Short for "gravity" or "gravitational field" in informal or technical contexts (e.g., high-grav, low-grav).
Etymology
The word 'grav' is a modern scientific abbreviation, directly extracted from the English word 'gravity'. 'Gravity' itself originates from the Latin 'gravitas', meaning 'weight, heaviness, seriousness', which is derived from the adjective 'gravis' (heavy, serious). The Latin 'gravis' can be traced back to the Proto-Indo-European root gʷreh₂-, meaning 'heavy'. The creation of 'grav' as a standalone term exemplifies a common process in technical language, where a salient syllable from a longer, established term is clipped to form a concise unit for specialized discourse, particularly in physics and engineering contexts.
Analysis
This word is a clipping or back-formation from the full word "gravity". It is not productively composed of smaller, independent morphemes in its current form.
Examples
The pilot experienced forces of up to 5 grav during the maneuver.
They conducted experiments in a simulated low-grav environment.
The value of one standard grav is about 9.8 m/s².