a 1 s 1 d 2 i 1 c 3
5 letters · 8 points in Scrabble
Meaning
noun a measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return
originFormer codename during development, from ASD (Anti-Submarine Division). Sometimes erroneously explained as "Allied Submarine Detection Investigation Committee".
Etymology from Wiktionary, CC BY-SA 3.0