ultraheavy

/ˈʌltrəˌhɛvi/
adjective
  1. Extremely heavy; having a very large weight.
    • The truck was carrying an ultraheavy load of steel beams.
    • Ultraheavy metals like osmium are used in specialized industrial applications.
    • The ultraheavy safe required a forklift to move it.
  2. Referring to a very large or massive version of something, such as a vehicle or weapon.
    • Ultraheavy cargo planes are essential for transporting large equipment.
    • The military developed an ultraheavy tank that could withstand powerful attacks.
    • The company released an ultraheavy-duty version of their drill for construction work.
Antonyms
What does "ultraheavy" mean? | whatsthatwordmean | whatsthatwordmean