Hear it
In a sentence
"The deep-sea creatures displayed a spectacular bioluminescence, lighting up the darkness."
Quick facts
Letters
15
Difficulty
extreme
Origin
Latin
First letter
B
extreme · Latin
A 15-letter extreme spelling bee word, likely of Latin origin.
"The deep-sea creatures displayed a spectacular bioluminescence, lighting up the darkness."
Letters
15
Difficulty
extreme
Origin
Latin
First letter
B