'AWOL' or 'NASA,' e.g., 7 letters
Basis of the answer to each starred clue, commonly, 7 letters
It stands for something, 7 letters
NASDAQ, NASCAR, or NASA, 7 letters
Radar or scuba, e.g., 7 letters
Scuba or snafu, e.g., 7 letters
The longest one in English is the Navy term ADCOMSUBORDCOMPHIBSPAC, 7 letters
A word formed from the initial letters of a multi-word name, 7 letters