thermal
adjective
ther·mal
| \ ˈthər-məl
\
\
Definition of thermal
(Entry 1 of 2)
1a
: 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
2
: designed (as with insulating air spaces) to prevent the dissipation of body heat
thermal underwear
3
[ Latin thermae public baths, from Greek thermai, plural of thermē ]
: of, relating to, or marked by the presence of hot springs
thermal waters
thermal
nounDefinition of thermal (Entry 2 of 2)
: a rising body of warm air
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Other Words from thermal
Adjective
thermally
\ ˈthər-mə-lē
\
adverb
\
adverb
Examples of thermal in a Sentence
Recent Examples on the Web: Adjective
For example, one of these impacts is a phenomenon called thermal expansion. — Jennifer Leman, Popular Mechanics, "What Is Methane, Anyway?," 29 Aug. 2019 In bathtub water-level terms, the melting of continental ice sheets is to thermal expansion as a rubber duck is to a person. — The Economist, "Climate change is a remorseless threat to the world’s coasts," 17 Aug. 2019 In 2015, the government of prime minister Narendra Modi launched new standards to limit the concentration of pollutants from the stack emissions of thermal power plants. — Kuwar Singh, Quartz India, "Cleaning up its coal power plants will cost India $10 billion—but who will pay?," 7 Aug. 2019 Economy, Trade and Industry Minister Hiroshige Seko told reporters that the extensive power outage was caused by an emergency shutdown of the main thermal power plant at Tomato Atsuma that supplies half of Hokkaido's electricity. — Fox News, "At least 7 dead, dozens feared buried after quake hits northern Japan," 2 Oct. 2018 The rifle was paired with a helmet whose eyepiece showed, with night vision and thermal vision, where the rifle was pointed as well as what was directly in front of the soldier. — Sabrina Schnur, BostonGlobe.com, "US Army researchers in Natick display new technology at the State House," 19 June 2019 Other system additions include networked thermal cameras installed along the reserve's perimeter and fiber-optic acoustic sensors. — Sean Gallagher, Ars Technica, "We know you hate the Internet of Things, but it’s saving megafauna from poachers," 6 June 2018 Ray Radakovich, of the Greenfield Police Department, said his agency purchased the thermal-vision drone four months ago. — Elliot Hughes, Milwaukee Journal Sentinel, "Spike strip, K-9, drone used to apprehend fleeing suspect in Greenfield," 12 Apr. 2018 In a press release, Shine says that the Goldilocks Zone may be turtles’ defense against thermal conditions linked with shifting temperatures. — Meilan Solly, Smithsonian, "Turtle Embryos May Be Able to Influence Their Sex by Moving Around Inside the Egg," 2 Aug. 2019Recent Examples on the Web: Noun
The chip is rated to dissipate up to 15 watts of thermals and has a base clock of 2.3GHz and 4GHz boost frequencies. — Gordon Mah Ung, PCWorld, "Lenovo puts AMD Ryzen chips in ThinkPads, giving Intel's rival a boost," 8 May 2019 Aviators can't use autopilot in trying conditions that can range from thermals rising out of flaming forests to flying low through mountain ranges. — Meg Jones, Milwaukee Journal Sentinel, "Firefighting planes and their crews spotlighted at EAA AirVenture," 27 July 2019 Buy Now: Tangle Teezer Hairbrush, $7.60 (originally $12) Olaplex Hair Perfector No. 3 Treatment Created by two chemistry PhDs, this reparative hair treatment relinks hair bonds broken by chemical, thermal, and mechanical processes. — Cnt Editors, Condé Nast Traveler, "The Best Amazon Prime Day Beauty Deals for Frequent Travelers," 16 July 2019 After all these years, the world’s very first national park is still one of its most imposing, a blend of land and water, forest and field, wildlife and geo-thermal features that often seem to be living things. — Dan Westergren, National Geographic, "Yellowstone National Park," 12 Apr. 2019 Turkey vultures circled overhead, riding the thermals against a backdrop of bright blue Colorado sky. — Sarah Kuta, The Know, "What are via ferratas and why is Colorado so crazy about them?," 2 July 2019 The parents are showing them how to survive, how to find food, how to navigate thermals. — San Diego Union-Tribune, "Column: Why the Safari Park’s California condor dads are Father’s Day stars," 14 June 2019 That alone is big news, but there are other welcome improvements with this generation, from display and color choices to thermals. — Melissa Riofrio, PCWorld, "Finally! The new Dell XPS 13 puts the camera in the right place," 8 Jan. 2019 Take thermals, columns of rising air that form when the ground below warms through sunlight. — David Grossman, Popular Mechanics, "Vultures Use Social Networks to Share Crucial Flight Information," 8 Nov. 2018These example sentences are selected automatically from various online news sources to reflect current usage of the word 'thermal.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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More Definitions for thermal
thermal
adjective
English Language Learners Definition of thermal
(Entry 1 of 2)
: of, relating to, or caused by heat
: designed to keep you warm by preventing heat from leaving your body
: having hot water flowing out of the ground
thermal
nounEnglish Language Learners Definition of thermal (Entry 2 of 2)
: a rising current of warm air that is produced when the sun heats an area of the ground
British
: thermal clothing or underwear
See the full definition for thermal in the English Language Learners Dictionary
thermal
adjective
ther·mal
| \ ˈthər-məl
\
\
Kids Definition of thermal
: of, relating to, or caused by heat
thermal insulation
thermal
adjective
ther·mal
| \ ˈthər-məl
\
\