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English Words Starting With D

7,181 entries — pick a word to see its definition, pronunciation, and usage.

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

diethylacetal
nounVery low (C2)
/daɪˌɛθɪlˈæsɪtæl/A specific chemical compound (CH3CH2O)2CH2, formed by the reaction of acetaldehyde with ethanol, belonging to the acetal class.
diethylaminoethanol
nounVery low (Specialist)
/ˌdaɪ.ɛθ.ɪl.əˌmiː.nəʊˈɛθ.ə.nɒl/A specific chemical compound (C₆H₁₅NO) used as an intermediate in organic synthesis and pharmaceuticals.
diethylcarbamazine citrate
nounVery Low (Technical/Scientific)
/daɪˌɛθəlkɑːˈbæməziːn ˈsɪtreɪt/A chemical compound, specifically a salt of the medication diethylcarbamazine, used as an anthelmintic (anti-parasite) drug.
diethylene glycol
nounLow
/daɪˌɛθɪliːn ˈɡlaɪkɒl/A colourless, viscous, hygroscopic liquid with a sweet taste, used primarily as a solvent and in the production of polymers, resins, and antifreeze formulations.
diethylpropion
nounVery Low
/daɪˌɛθɪlˈprəʊpɪɒn/A synthetic, sympathomimetic amine used as a short-term appetite suppressant for weight loss.
diethylstilbestrol
nounVery Low
/daɪˌiːθaɪlˌstɪlˈbɛstrɒl/A synthetic non-steroidal estrogen drug, first prescribed in the mid-20th century.
diethyltoluamide
nounVery Low
/daɪˌɛθɪltɒlˈjuːəmaɪd/A synthetic organic compound (C12H17NO) used as the most common active ingredient in insect repellents.
diethyltryptamine
nounC2
/daɪˌiːθaɪlˈtrɪptəmiːn/A synthetic psychedelic drug derived from tryptamine.
dietician
nounC1
/ˌdaɪəˈtɪʃn/A qualified healthcare professional who specializes in diet, nutrition, and food science, providing advice on healthy eating and managing specific medical conditions through diet.
dietitian
nounB2
/ˌdaɪ.əˈtɪʃ.ən/A healthcare professional trained to advise on diet and nutrition, often to help manage health conditions, promote wellness, or achieve specific health goals.
dietrich
nounLow frequency (C2 level, technical/specialist term)
/ˈdiːtrɪk/A type of slim, straight lockpicking tool, often used synonymously with 'lock pick'.
dietrich von bern
nounC2+
/ˈdiːtrɪx fɒn ˈbɛːn/The historical and legendary name for Theodoric the Great, King of the Ostrogoths (c. 454–526 AD), appearing as a heroic figure in Germanic epic and medieval legend.
dif
nounVery Low
/dɪf/A colloquial or dialectal abbreviation of 'different'.
diff
nounverb-transitiveLow frequency in general English; High frequency in computing/programming contexts.
/dɪf/A significant or discernible difference, often used in computing to refer to a comparison showing changes between versions of a file or data set.
diffeomorphism
nounC2
/ˌdɪfɪəʊˈmɔːfɪzəm/A one-to-one, continuously differentiable mapping between manifolds that has a continuously differentiable inverse.
differ
verbverb-intransitiveB2
/ˈdɪfə(r)/To be unlike or dissimilar; to hold a different opinion or belief.
difference
nounverbverb-transitiveHigh
/ˈdɪf(ə)r(ə)ns/The state or condition of being dissimilar or distinct; a point or way in which people or things are not the same.
difference threshold
nounLow
/ˈdɪf.rəns ˌθreʃ.həʊld/The minimum noticeable difference between two stimuli that a person can reliably detect (just noticeable difference).
differentia
nounLow
/ˌdɪf.əˈrɛn.ʃi.ə/A distinguishing characteristic, especially one that differentiates a species from others within its genus.
differentiable manifold
nounVery Low
/ˌdɪf.əˌren.ʃi.ə.bəl ˈmæn.ɪ.fəʊld/A topological space that locally resembles Euclidean space and on which one can perform calculus.

Showing 3261–3280 of 7181 words.