Ultraheavy

adj

adj ·Rare ·Advanced level

Definitions

Adjective
  1. 1
    Describing any atom that has a very large atomic weight; especially those that lie beyond fermium in the periodic table
  2. 2
    Extremely or exceedingly heavy.

Etymology

From ultra- + heavy.

Related phrases

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.