If it's not Latin for "
it is," I would guess something from the following.
EST Eastern Standard Time (GMT-0500)
EST Environmentally Sustainable Transport
EST Erhard Seminar Training (Werner Erhard)
EST Established
EST Estimate
EST Estimated
EST Educational School Tours, Inc.
EST Electrical Safety Test (band)
EST Electrical Safety Testing
EST Electronic Security Tactical (US military)
EST Electronic Sell-Through
EST Electronic Shelf Tag
EST Electronic Shipping Tools (Canada Post)
EST Electronic Spark Timing (GM)
EST Electroshock Therapy
EST Elevated Storage Tank
EST Emergency Services Team
EST Emergency Support Team
EST Emitter Switched Thyristor
EST Encefalopatie Spongiformi Trasmissibili (Italian: Bovine Spongiform Encephalopathy)
EST Energy Saving Trust (UK)
EST Enfermedad Sexualmente Transmisible (Spanish: sexually transmitted disease)
EST Engagement Skills Trainer
EST Engineering Screening Team
EST Enlisted Screening Test
EST Enlisted Specialty Training
EST Enroute Support Team
EST Environmental Science and Technology
EST Environmental System Test
EST Environmentally Sound Technologies
EST Equal Spin Temperature
EST Equipment Status Telemetry
EST Esbjörn Svensson Trio (Sweden)
EST Escola Superior de Tecnologia (Portugal)
EST Essential Subjects Training
EST Estates
EST Esther
EST Estimated Value (used in auctions)
EST Estimation
EST Estonia
EST Estonian (language)
EST European Society for Translation Studies
EST Evaluation Summary Table
EST Executive Steering Committee
EST Exercise Stress Test (aka treadmill test)
EST Exercise Study (EU, UN)
EST Expressed Sequence Tag
C’est un expert
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