EST

EST may stand for:

Eastern Standard Time - There are three time zones known as Eastern Standard Time (Australian time zone UTC+10, Brazilian Eastern time zone UTC-3 and North American time zone, UTC-5)
Electron Spiral Toroid (Energy technology)
Erhard Seminars Training
Expressed sequence tag (biology)

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EST

See also: EST, Biology, Electron Spiral Toroid, Energy, Erhard Seminars Training, Expressed sequence tag, North American Eastern Standard Time Zone, Technology, Three letter acronym