Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

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heavy hydrogen an isotope of hydrogen with a mass number greater than one; deuterium.
heavy metal a variety of rock music featuring highly amplified sound and insistent rhythms.
heavy spar see barite.
heavy water water composed of oxygen and deuterium; deuterium oxide.
heavy-duty made to last through intensive or unusually rough use.
heavy-handed not adept or skillful; without dexterity or talent for precision; awkward; clumsy. [2 definitions]
heavy-hearted burdened by sadness; depressed; dejected; melancholy.
heavy-laden heavily loaded, as a vehicle or pack animal. [2 definitions]
top-heavy having too much weight at the top to be in proper balance. [2 definitions]