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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)

test tube
nounB1
/ˈtɛst ˌtjuːb/A thin, cylindrical glass or plastic tube closed at one end, used in chemical and biological laboratories to hold, mix, or heat small quantities of liquid or solid substances.
test-bed
nounMedium
/ˈtest bed/A situation, environment, or platform used for testing new ideas, systems, or equipment.
test-drive
verbverb-transitiveB2
/ˈtɛst draɪv/ (noun), /ˌtɛst ˈdraɪv/ (verb)to drive a vehicle to assess its performance and suitability before buying it.
test-fly
verb-transitiveC1/C2 (Low Frequency, Technical/Specialized)
/ˈtest ˌflaɪ/To pilot a newly built or modified aircraft for the first time to evaluate its performance and safety.
test-market
verb-transitiveC1
/ˈtest ˌmɑː.kɪt/To introduce a product in a limited area or to a specific group before a full-scale launch, in order to gather information about its likely success.
test-tube baby
nounC1
/ˈtest tjuːb ˌbeɪbi/A baby conceived by in vitro fertilisation (IVF), where an egg is fertilised by sperm outside the body in a laboratory dish.
test-tube skin
nounC1
/ˈtɛst tjuːb skɪn/Artificially grown or synthesized human skin produced in a laboratory setting for research, testing, or medical use.
testa
nounC2 (Specialist)
/ˈtɛstə/the hard, protective outer shell or covering of a seed, especially in botanical contexts.
testacy
nounC2
/ˈtɛstəsi/The state of having left a valid will at the time of death.
testament
nounC1
/ˈtɛstəmənt/a formal written document that expresses a person's wishes for the distribution of their property after death; a will.
testamentary trust
nounC1-C2
/ˌtes.təˈmen.tə.ri ˈtrʌst/A trust created by a person's will that takes effect only upon their death.
testate
adjectivenounC2
/ˈtɛsteɪt/Having made a valid will before death.
testator
nounC2
/tɛˈsteɪ.tə/A person, typically male, who has made a legally valid will before death.
testatrix
nounLow
/teˈsteɪ.trɪks/A woman who has made a will.
testcross
nounRare
/ˈtɛstˌkrɒs/A genetic cross between an organism of unknown genotype and an organism that is homozygous recessive for a trait.
testee
nounB2
/tɛˈstiː/A person who takes or is subjected to a test, examination, or assessment.
tester
nounC1
/ˈtes.tər/A person or device that tests something, especially to check for quality, performance, or reliability.
testes
nounplural-nounC1/C2
/ˈtɛstiːz/The male reproductive glands that produce sperm and testosterone.
testicle
nounC1
/ˈtɛstɪk(ə)l/One of the two oval male reproductive glands located in the scrotum, which produce sperm and testosterone.
testification
nounLow
/ˌtɛstɪfɪˈkeɪʃ(ə)n/The action or process of giving evidence or testifying in a formal, often legal or official context.

Showing 1981–2000 of 7190 words.