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English Dictionary — Definitions & Meanings

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“D” Words

dynamiting
noun
The act of destroying something using dynamite.
dynamo
noun
A machine that converts mechanical motion into electrical current.
dynasty
noun
A sequence of rulers from the same family, one following another.
dyon
noun
(physics) A theoretical particle that carries both an electric charge and a magnetic charge.
dysentery
noun
A serious intestinal infection causing severe diarrhoea, often with blood, along with fever and abdominal pain.
dysergy
noun
Harmful effects that come from several factors working badly together, the opposite of synergy.
dysfunction
noun
A failure to work properly, especially in an organ, relationship, or system.
dysfunctional
adj
Not working properly; unable to function in a normal or healthy way.
dysgerminoma
noun
(medicine) A type of tumour, usually cancerous, that typically develops in the ovary.
dyshygienic
adj
Not clean; lacking proper hygiene.
dysjunction
noun
The parting of structures that are usually connected.
dyslexia
noun
A learning difficulty that makes reading, spelling, and writing more difficult, despite normal intelligence.
dyslexic
adj
Having, or relating to, dyslexia.
dyslogy
noun
Strong criticism or disapproval.
Dyson
noun
A vacuum cleaner that uses cyclonic suction instead of a bag, named after the brand that popularised the design.
dyspepsia
noun
(medicine) Mild indigestion, causing stomach pain, heartburn, or nausea, usually after a meal.
dyspeptic
adj
(medicine) Suffering from, or relating to, indigestion.
dysphemism
noun
The use of a harsh or offensive word in place of a milder, neutral one.
dysphoria
noun
A persistent state of unease, dissatisfaction or low mood, in which a person feels profoundly uncomfortable in themselves.
dyspnea
noun
Difficult or laboured breathing; the distressing sensation of not being able to get enough air.
dyspneal
adj
(medicine) Relating to difficulty in breathing.
dyspneic
adj
Having difficulty breathing.
dysprosium
noun
A silvery metallic rare earth element with the symbol Dy and atomic number 66.
dysrhythmia
noun
An irregularity in a natural body rhythm, especially an irregular heartbeat.
dystopia
noun
An imagined society in which life is deliberately made bad — typically through oppression, surveillance, environmental ruin or total state control.
dystopian
adjective
Relating to or resembling a dystopia — an imagined society made deliberately grim through oppression, surveillance or collapse.