at

IPA: ˈæt

The at sign (@).
Alternative form of att (Laos currency unit) [A subdivision of currency, equal to one hundredth of a Lao kip.]
(software) Initialism of assistive technology. [Umbrella term that includes adaptive, assistive, and rehabilitative devices for people with disabilities.]
(US, Navy) Initialism of auxiliary tugboat.
(US, sports) Initialism of anaerobic threshold.
(fan fiction) Initialism of alternate timeline.
(aviation, navigation) Initialism of aerotriangulation. [The assigning of coordinates to points on the ground by use of aerial photographs.]
Initialism of appropriate technology. [The use of technology that is small-scale, affordable by locals, decentralized, labor-intensive, energy-efficient, environmentally sound, and locally autonomous.]
(firefighting, aviation) Abbreviation of air tanker. [An aircraft used to deliver liquids (or powders) from the air, usually either fuel, fire-retardants, or water.]
Initialism of activity theory. [A line of eclectic social science theories and research with its roots in a Soviet theory pioneered by Sergei Rubinstein in the 1930s, seeking to understand human activities as systemic and socially situated phenomena and to go beyond paradigms of reflexology and classical conditioning.]

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