Meanings
adjectiveultraheavy (comparative more ultraheavy, superlative most ultraheavy)
comparative more ultraheavy · superlative most ultraheavy
- chemistryDescribing any atom that has a very large atomic weight; especially those that lie beyond fermium in the periodic table
Origin
Cite this entry
APA
ultraheavy. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/ultraheavy
MLA
“ultraheavy.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/ultraheavy. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “ultraheavy,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/ultraheavy.
Source: ultraheavy on Wiktionary, CC BY-SA 4.0.