superheavy

1. not comparableMuch heavier than usual.

   Near-synonym: superheavyweight

   1 more example

   The superheavy tank weighed 80 tonnes and was said to be indestructible in combat.

   Synonyms: superheavyweight

   1. not comparablenuclear physicsDescribing a transuranic element with an extremely high atomic number; typically taken to mean beyond lawrencium (element 103, the last actinide).

      Synonyms: superheavyweight

2. not comparablehuman sciencesstressed more than is usual

plural superheavies

1. A superheavy thing.

   Near-synonym: superheavyweight

   Synonyms: superheavyweight

   1. nuclear physicsA superheavy element.

      Synonyms: superheavyweight

   2. informalgovernmentA superheavy tank or artillery piece.

      1 more example

      Representative of the scope of Soviet artillery development, two types of super-heavy, self-propelled artillery pieces (a 400mm mortar and a 310mm gun) trundled across Red Square during the parade of November 1960. There is no doubt that these weapons fire an unorthodox long-range shell, or that such a shell could carry a nuclear warhead. However, with the advent of rockets and missiles on mobile launchers, and since only two of each type of these super-heavies was seen on parade, it may well be that they will never be produced and issued to troops in large numbers. Whatever their intended role, these guns clearly demonstrate the broad scope of Soviet effort in the field of weapons development.

      1961, U.S. Army, “Communist Military Capabilities”, in Army Information, Pamphlet No. 355-201-1, page 89

      Synonyms: superheavyweight