We don't have synonyms for exacto yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are exact, exacta and Exact.
(N) :
EXACTO, an acronym of "Extreme Accuracy Tasked Ordnance", is a sniper rifle firing smart bullets being developed for DARPA (Defense Advanced Research Projects Agency) by Lockheed Martin and Teledyne Scientific & Imaging in November 2008.https://www.darpa.mil/news-events/2015-04-27
(N) :
EXACTO, an acronym of "Extreme Accuracy Tasked Ordnance", is a sniper rifle firing smart bullets being developed for DARPA (Defense Advanced Research Projects Agency) by Lockheed Martin and Teledyne Scientific & Imaging in November 2008.https://www.darpa.mil/news-events/2015-04-27