Etymology

ultrasonic

U1L1T1R1A1S1O1N1I1C3

Today it means: Beyond (higher in frequency than) the range of sound perceptible to the human ear; with a frequency of 20 kilohertz or higher. Full definition →

English sonic ← Latin sonus ← Proto-Indo-European *swónh₂os
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The story

  1. Proto-Indo-European*h₂el-
  2. Latinūls
  3. Latinultrā
  4. Englishultra-
  5. Proto-Indo-European*swenh₂-
  6. Proto-Indo-European*swónh₂os
  7. Latinsonus
  8. Englishsonic
  9. English todayultrasonic

From ultra- + sonic.

Etymology from Wiktionary, CC BY-SA 4.0.