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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)

theremin
nounRare
/ˈθɛrəmɪn/An early electronic musical instrument, played without physical contact.
theresa
nounLow
/təˈriːzə/A female given name.
therese de lisieux
nounLow
/təˈrɛz də liːˈzjɜː/The name of a French Catholic saint, specifically Saint Thérèse of Lisieux (born Marie Françoise-Thérèse Martin).
therezina
nounVery Low (Specialized)
/ˌθɛrəˈziːnə/A proper noun referring to the capital city of the Brazilian state of Piauí, located in northeastern Brazil.
theriac
nounVery low / Archaic / Historical
/ˈθɪərɪak/An ancient medicinal compound or preparation, originally regarded as a universal antidote to poisons and a panacea for various ailments.
therian
adjectivenounVery Low / Niche
/ˈθɪə.ri.ən/An individual who identifies spiritually, psychologically, or otherwise as having a non-human animal identity; a member of an online and offline subculture focused on this identity.
theriatrics
nounVery Low (C2+)
/ˌθɛrɪˈatrɪks/the branch of medicine or veterinary science dealing with the treatment of disease, especially through remedies and healing practices.
theridiid
adjectivenounLow/Very Low
/θɪˈrɪdɪɪd/a spider belonging to the family Theridiidae.
theriogenology
nounVery rare
/ˌθɪərɪəʊdʒɪˈnɒlədʒi/The branch of veterinary medicine dealing with animal reproduction.
therm
nounVery Low
/θɜːm/A unit of heat energy, equivalent to 100,000 British thermal units (BTU), or approximately 105.5 megajoules. It is primarily used as a measurement for natural gas.
thermae
nounplural-nounC2
/ˈθɜːmiː/The public baths in ancient Rome or Greece.
thermaesthesia
nounVery low
/ˌθɜːm.ɪsˈθiː.zi.ə/The ability to perceive or sense heat and cold.
thermal
adjectivenounB2
/ˈθɜː.məl/Relating to heat or temperature.
thermal analysis
nounVery low
/ˌθɜːm(ə)l əˈnæləsɪs/A set of techniques for studying the properties of materials as they change with temperature.
thermal barrier
nounC2
/ˈθɜːməl ˈbæriə/An insulating layer or system that prevents or significantly reduces the transfer of heat.
thermal conductivity
nounC2
/ˌθɜː.məl ˌkɒn.dʌkˈtɪv.ə.ti/A physical property of a material that quantifies how easily heat flows through it.
thermal diffusion
nounLow
/ˈθɜːməl dɪˈfjuːʒən/The process by which heat spreads through a substance due to a temperature gradient.
thermal efficiency
nounC1
/ˈθɜːməl ɪˈfɪʃənsi/The ratio of useful energy output to total energy input in a heat engine or system, expressed as a percentage.
thermal energy
nounB2
/ˈθɜː.məl ˈɛn.ə.dʒi/The internal energy present in a system due to the random motions of its atoms and molecules, directly related to its temperature.
thermal equator
nounC2
/ˈθɜː.məl ɪˈkweɪ.tər/The belt encircling Earth where the average annual surface temperature is highest.

Showing 2361–2380 of 7190 words.