What does ATH stand for?

Abbreviated Trouble History (VLIE)

Above the Horizon

Acetyltyrosine Hydrazide (MAE)

Advanced Therapeutic Sys - AMEX symbol

Advanced Therapeutic Systems Ltd. - AMEX symbol (SAG)

Air Transportable Hospital (AFM)

Air Travel Corp. - ICAO designator (FAAC)

Allan Teitge Inc., Tacoma, WA - Manufacturer code for watercraft hull identification number (USCG)

Alumina Trihydrate - Inorganic chemistry

Anthem - NYSE symbol

Anthropometric Total Hip - Medicine (MELL)

Antitank Helicopter (MCD)

Apostolate to Hungarians - Diocesan abbreviation - District of Columbia (TOCD)

Arapahoe Mining - Vancouver Stock Exchange symbol

Arms Technology - NCIC firearms make code (NCIC)

Artificial Time History - Nuclear energy (NRCH)

Assign Thresholds - Environmental science (COE)

Athens - Greece - Airport symbol (OAG)

Athens Observatory - Greece - Seismograph station code, US Geological Survey (SEIS)

Athlete - Telegraphy (PCTE)

Athletic (MUGU)

Athlone Industries, Inc. (SAUO)

Athwartships

Atlanta - Horse racing entrants (HRTC)

Attention Hang Up - Telecommunications (VERA)

Automatic Attitude Hold (SAUS)

Automatic Tape Handler (IAA)

Automatic Target Handover (SAUS)

Autonomous Terminal Homing - Air Force

Faire Atta - Language code (ETLW)

Athenaeus - First century AD - Classical studies (OCD)

Athenium (SAUS)

Athapascan - MARC language code - Library of Congress (LCCP)

atheism (SAUS)

Athlete (ODA)

Athletic (ADWA)