Meaning of THERMAL in English


I. ˈthər-məl adjective

Etymology: Greek thermē

Date: 1756


[Latin thermae public baths, from Greek thermai, plural of thermē ]

: of, relating to, or marked by the presence of hot springs

thermal waters


a. : of, relating to, or caused by heat

thermal stress

thermal insulation

b. : being or involving a state of matter dependent upon temperature

thermal conductivity

thermal agitation of molecular structure

c. : having low energies of the order of those due to thermal agitation

thermal neutrons

3. : designed (as with insulating air spaces) to prevent the dissipation of body heat

thermal underwear

• ther·mal·ly -mə-lē adverb

II. noun

Date: 1933

: a rising body of warm air

Merriam-Webster's Collegiate English vocabulary.      Энциклопедический словарь английского языка Merriam Webster.