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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)

dioscin
nounVery low
/ˈdaɪəʊsɪn/A steroidal saponin found in certain plants, particularly in yams of the genus Dioscorea.
dioscuri
plural-nounRare / Very Low Frequency
/ˌdʌɪˈɒskjʊrʌɪ/Proper noun referring specifically to Castor and Pollux, the twin sons of Zeus and Leda in Greek mythology.
diosgenin
nounVery Low
/daɪˈɒzdʒənɪn/A steroid sapogenin used as a key starting material for the industrial synthesis of steroid hormones.
diosmose
verb-transitiveExtremely rare / Obsolete / Non-standard
A misspelling or non-standard variant of 'osmosis' or occasionally confused with 'dialysis' in non-technical contexts.
diouf
nounVery Low
/ˈdjuːf/A proper noun, specifically a surname of Senegalese origin.
dioxan
nounC2 (Very Low Frequency / Technical)
/daɪˈɒksæn/A colorless, volatile liquid ether (C₄H₈O₂) used as a solvent, especially for cellulose derivatives and fats.
dioxane
nounC2
/daɪˈɒk.seɪn/A heterocyclic organic compound, specifically a colorless, flammable liquid with an ether-like smell, used primarily as a solvent in various chemical processes.
dioxide
nounLow-Mid
/daɪˈɒk.saɪd/A chemical compound containing two atoms of oxygen per molecule.
dioxin
nounC2
/daɪˈɒk.sɪn/A highly toxic chemical compound, primarily a byproduct of certain industrial processes involving chlorine and organic matter, known for its persistence in the environment and association with severe health effects.
dip
nounverbverb-intransitive+1B1
/dɪp/A quick, brief downward movement into and out of a liquid or substance, or a slight decrease or downward slope.
dip circle
nounVery Low
/ˈdɪp ˌsɜːkl/An instrument, also called a dip needle or inclinometer, used to measure the angle a magnetic needle makes with the horizontal (the magnetic dip or inclination) at a given point on Earth.
dip fault
nounRare (Technical/Jargon)
/ˈdɪp ˌfɔːlt/A geological fault in rock layers where the predominant motion is downward along the fault plane's inclination.
dip into
verbB2
/ˈdɪp ˌɪn.tuː/To take a small, casual, or non-exhaustive amount from a larger source or reserve.
dip needle
nounVery Low / Technical
/ˈdɪp ˌniː.dl̩/A specialized magnetic compass with a needle mounted horizontally on a vertical axis, used to measure the angle of magnetic dip or inclination.
dip net
nounC2
/ˈdɪp ˌnet/A net with a long handle, designed to be dipped or lowered into water to catch fish or other aquatic creatures.
dip out
verbC1
/dɪp aʊt/to leave or exit a situation, especially in a sudden, quiet, or unobtrusive manner; to fail to participate in something one was expected to attend.
dip switch
nounLow
/ˈdɪp ˌswɪtʃ/A small switch, typically found on a circuit board or electronic device, used to select between different settings or modes.
dip-slip fault
nounVery Low Frequency (C2+ - Specialised)
/ˈdɪp slɪp ˌfɔːlt/A type of geological fault where movement is predominantly vertical (parallel to the dip plane of the fault), resulting in one block moving up or down relative to the other.
dipeptidase
nounLow (C2)
/daɪˈpɛptɪdeɪz/An enzyme that catalyzes the hydrolysis of dipeptides into their constituent amino acids.
dipeptide
nounVery Low
/daɪˈpɛptaɪd/A molecule composed of two amino acids linked by a single peptide bond.

Showing 3641–3660 of 7181 words.