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thoraco-
thoracolumbar
thoracotomy
thorax
Thorazine
thoria
thorianite
thorite
thorium
thorium dioxide
thorium series
thorn
thorn apple
thornback
thornbill
thorny
thorny devil
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thorium
tho·ri·um [ tháwree əm ]


noun 
Definition:
 
soft radioactive element: a soft silvery white radioactive metallic element. Source: thorite, thorianite. Use: alloys, source of nuclear energy.
Symbol  Th
[Mid-19th century. <Thor]

tho·ric adjective
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