T1H4E1R1M3A1L1
12 points
THERMAL is validvalid
a rising mass of warm air [n THERMALS]
relating to heat [adj THERMALLY] / a rising current of warm air used by e.g. gliders or birds of prey [n -S]
a rising mass of warm air [n THERMALS]
relating to heat [adj THERMALLY] / a rising current of warm air used by e.g. gliders or birds of prey [n -S]