superactinide
Word Rarity
Very rare
Frequency: Zipf frequency 0.00 in modern English
18
Scrabble Score
13
Letters
4
Syllables
11
Unique Chars
Meaning
noun
Any of the undiscovered chemical elements from unbiunium (121) to perhaps unpentseptium (157), following the transactinides. These will presumably go below the actinides in the periodic table.
Etymology
Etymology tree Proto-Indo-European *úp Proto-Indo-European *-er Proto-Indo-European *upér Proto-Italic *super Latin super Latin super-lbor. English super- English actinide English superactinide From super- + actinide.