Is “Thermalizing” a Scrabble word?
Yes
THERMALIZING
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Thermalizing
verb
1.To lower the velocity and kinetic energy of fast neutrons in a nuclear reactor by use of a moderator, and thus increase the efficiency of fission