ASDIC
SonarSonar.
/ˈæzdɪk/
Meaning
1 senses(historical, uncountable)Sonar.
More definitions
- 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
Origin
Former codename during development, from ASD (Anti-Submarine Division). Sometimes erroneouFormer codename during development, from ASD (Anti-Submarine Division). Sometimes erroneously explained as "Allied Submarine Detection Investigation Committee".
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Synonyms
2 synonymsClose in meaning
- 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:sonarecho sounder
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable