Definition of underdamp in English:

underdamp

verb

[WITH OBJECT]Physics
  • Damp (a system) incompletely, so as to allow a few oscillations after a single disturbance:

    ‘the suspension is underdamped’
    • ‘Additionally, the technique can separate diffusive overdamped motions from underdamped vibrations by varying the degree of hydration and temperature in the sample.’

Pronunciation:

underdamp

/ˌʌndəˈdamp/