thermal
ther|mal /θ'ɜːrməl/ (thermals)
1 [ADJ] ADJ n
Thermal means relating to or caused by heat or by changes in temperature.
...thermal power stations.
2 [ADJ] ADJ n
Thermal streams or baths contain water which is naturally hot or warm.
Volcanic activity has created thermal springs and boiling mud pools.
3 [ADJ] ADJ n
Thermal clothes are specially designed to keep you warm in cold weather.
My feet were like blocks of ice despite the thermal socks...
[N-PLURAL]
Thermals are thermal clothes.
Have you got your thermals on?
4 [N-COUNT]
A thermal is a movement of rising warm air.
Birds use thermals to lift them through the air.
1 [ADJ] ADJ n
Thermal means relating to or caused by heat or by changes in temperature.
...thermal power stations.
2 [ADJ] ADJ n
Thermal streams or baths contain water which is naturally hot or warm.
Volcanic activity has created thermal springs and boiling mud pools.
3 [ADJ] ADJ n
Thermal clothes are specially designed to keep you warm in cold weather.
My feet were like blocks of ice despite the thermal socks...
[N-PLURAL]
Thermals are thermal clothes.
Have you got your thermals on?
4 [N-COUNT]
A thermal is a movement of rising warm air.
Birds use thermals to lift them through the air.