adj
thermonuclear
thur-moh-NYOOK-lee-uh
adj
1
Relating to nuclear reactions, especially fusion, that occur at extremely high temperatures.
"A thermonuclear bomb is far more powerful than an atomic bomb."
How to Use Thermonuclear
Learner’s notesIn plain EnglishDescribes powerful nuclear reactions or weapons based on fusion, driven by intense heat.
Common pairings
thermonuclear weapon
thermonuclear war
Word Forms
thermonuclears plural
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A _____ bomb is far more powerful than an atomic bomb.
Etymology
From thermo- ("heat") plus nuclear.