The most common and most likely answer to this crossword clue is the 4 letter word ARPA which also is the latest solution we found used in Boston Globe in 2012.
Internet-pioneering acronym crossword clue answers
Here's a list of possible crossword answers ranked by the most likely to least likely.
| Answer | Likelyness | Letters | 
|---|---|---|
| ARPA | 100 % | 4 | 
Words with a meaning similar to the clue: Internet-pioneering acronym
These words may or may not be a possible solution to this crosswords clue.- mime
 - url
 - icann
 - alan
 - http
 - acrostic
 - abc
 - acropolis
 - axis
 - ballade
 - bus
 - chord
 
Crossword Answer definitions
More crossword clues leading to the same solutions
Here's a few more crossword clues - all leading to the identical solution