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English Words Starting With T

7,190 entries — pick a word to see its definition, pronunciation, and usage.

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Noun Verb Adjective Adverb Plural noun Combining form Verb (transitive)Verb (intransitive)Verb (ambitransitive)

thermal equilibrium
nounC1/C2
/ˌθɜː.məl ˌiː.kwɪˈlɪb.ri.əm/The state in which two or more objects in contact have the same temperature, so there is no net flow of heat between them.
thermal imaging
nounLow-to-medium (common in technical/specialist contexts, less frequent in everyday conversation)
/ˈθɜː.məl ˈɪm.ɪ.dʒɪŋ/A technology that creates images by detecting and measuring infrared radiation (heat) emitted by objects, displaying temperature differences visually.
thermal neutron analyzer
nounspecialized
/ˈθɜː.məl ˈnjuː.trɒn ˈæn.ə.laɪ.zə/An instrument designed to detect and measure thermal neutrons, which are neutrons with low kinetic energy, typically used in scientific analysis.
thermal neutrons
plural-nounC2
/ˌθɜː.məl ˈnjuː.trɒnz/Neutrons that have been slowed down to have an average kinetic energy similar to the thermal energy of their surrounding medium, making them effective at inducing nuclear fission in certain isotopes like uranium-235.
thermal noise
nounC2
/ˈθɜːm(ə)l nɔɪz/In electronics and communications, the inherent, random electrical fluctuations present in all conductors due to the thermal agitation of charge carriers (electrons).
thermal pollution
nounC1
/ˈθɜː.məl pəˈluː.ʃən/harmful heating of a natural water body (river, lake, ocean) by industrial or human activity, reducing oxygen levels and harming aquatic life.
thermal printer
nounB1
/ˈθɜː.məl ˈprɪn.tər/A printer that uses heated pins on thermal paper to create text and images without ink or toner.
thermal radiation
nounSpecialist / Technical
/ˈθɜː.məl ˌreɪ.diˈeɪ.ʃən/The electromagnetic radiation emitted by an object due to its temperature, which occurs without the need for an intervening medium.
thermal reactor
nounLow
/ˈθɜːməl riˈæk.tə/A type of nuclear reactor that uses slow (thermal) neutrons to sustain a fission chain reaction.
thermal shock
nounLow
/ˈθɜː.məl ʃɒk/A rapid change in temperature that causes stress or damage to a material or object.
thermal spring
nounC1
/ˈθɜː.məl sprɪŋ/A natural spring of water heated by geothermal energy from the Earth's interior.
thermal underwear
nounB2
/ˈθɜːm(ə)l ˈʌndəweə/Clothing worn next to the skin, designed to provide warmth by trapping body heat.
thermal unit
nounC1
/ˈθɜː.məl ˈjuː.nɪt/A unit of measurement for quantifying heat energy.
thermalgesia
nounVery Low
/ˌθɜːmælˈdʒiːziə/Pain caused by a moderate degree of heat that would not normally be painful.
thermalize
verbRare / Highly Technical
/ˈθɜː.mə.laɪz/(Physics) To bring a collection of particles or a system into a state of thermal equilibrium, where a characteristic temperature can be defined.
thermanesthesia
nounC2
/ˌθɜː.mæn.əsˈθiː.zi.ə/A medical condition characterized by the loss of the ability to perceive heat or cold.
thermate
nounVery Low
/ˈθɜː.meɪt/A pyrotechnic composition used primarily in incendiary devices and military ordnance, burning at extremely high temperatures to melt or destroy metal targets.
thermel
nounVery Low / Obsolete / Historical
/ˈθɜːməl/An obsolete term for a device used to measure temperature, specifically referring to a type of thermometer or early thermal measurement instrument.
thermesthesia
nounVery Low (Technical/Specialist)
/ˌθɜːm.ɪsˈθiː.zi.ə/The physiological ability to perceive temperature; the sense of heat and cold.
thermette
nounExtremely Rare / Obsolete
/θɜːˈmɛt/A portable device, typically a small metal boiler, for quickly heating water using a solid-fuel burner, often used for making tea or coffee outdoors.

Showing 2381–2400 of 7190 words.