Tha - Language code (ETLW)
Thayer, Robinson & Cary - NCIC firearms make code (NCIC)
Thylungra - Queensland - Airport symbol (AD)
Thymocyte - Clinical chemistry
Thyratron - Electronics (IAA)
Transitional Hospitals Corp. - NYSE symbol (SAG)
Turk Hava Yollari - Turkish Airlines - ICAO designator (FAAC)
Turk Hava Yollari AO - Turkish Airlines, Inc.
Thymine - Also, T - Biochemistry
Thymocyte - Immunology (QSUL)
Thymectomy (STED)
Thymus (STED)
Thyratron (IDOE)
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