noncondensable

/ˌnɑnkənˈdɛnsəbəl/
adjective
  1. Not able to be condensed, especially from a gas to a liquid under normal conditions.
    • The engineer removed noncondensable particles from the steam system.
    • Noncondensable gases like helium remain in the air even when cooled.
    • In the lab, they studied how noncondensable vapors affect pressure readings.
Antonyms