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{%type%} Definitions

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Short "hint"

extremely clean, esp. free of germs

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Usage examples (35)
  • Three sets of ultra-clean restrooms are also progressively larger as one goes towards the rear.
  • And we're helping refiners deal with the new EPA tier-two rules through our ultra-clean fuels program.
  • Ammonia as an energy-dense, ultra-clean fuel for vehicular and stationary applications is not a new concept.
  • It is a fascinating little document of the park, looking sparse and ultra-clean only a year after it first opened.
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