atd

ATD is an acronym that can refer to several distinct terms across different domains. The most prominent use is the Association for Talent Development, a U.S.-based professional organization for workforce development, training, and learning professionals. It provides resources, certification, conferences, and advocacy; it was formerly known as the American Society for Training and Development (ASTD) before adopting ATD as its abbreviation.

In medicine, ATD commonly stands for antithyroid drugs, a class of medications such as methimazole and propylthiouracil used to treat hyperthyroidism. In endocrinology, ATD is used as shorthand within clinical notes and literature.

In transportation and logistics, ATD can denote Actual Time of Departure, the real departure time of a vehicle or shipment, juxtaposed with ETD (Estimated Time of Departure) or ETA (Estimated Time of Arrival). It appears in scheduling and operations.

In media and publishing, ATD has been used as All Things Digital, the title of a technology-focused publication and blog associated with The Wall Street Journal’s online platform.

Other uses exist in specialized fields, such as acronyms in data security or project management, but these are less standardized and rely on domain-specific definitions. Due to its cross-domain usage, the meaning of ATD should be inferred from context, particularly by identifying the field, organization, or document in which it appears.