A.D.C.

aide-de-camp.

* * *

ADC¹ (no periods),

1. Aid to Dependent Children (a program of the federal and state governments in the United States to provide financial and medical assistance to needy children and the adults taking care of them).

2. advanced developing country: »

Foreign aid has contributed to the rise of a series of economically free and prosperous “ADCs,”…including South Korea, Singapore, Taiwan, Malaysia, and Thailand (Time).

ADC² (no periods) or A.D.C.,

1. aide-de-camp.

2. Air (or Aerospace) Defense Command.