tetroon
Word Rarity
Very rare
Frequency: Zipf frequency 0.00 in modern English
7
Scrabble Score
7
Letters
1
Syllables
5
Unique Chars
Meaning
noun
A constant-level weather balloon in the shape of a tetrahedron used to make observations in the lower atmosphere.
Etymology
Etymology tree Proto-Indo-European *kʷetwóres Proto-Hellenic *kʷétwores Ancient Greek τέσσᾰρες (téssăres) Ancient Greek τετρᾰ- (tetră-)bor. English tetra- English balloon English tetroon From tetra- + balloon.