The meaning of COMPOUND is something formed by a union of elements or parts; especially : a distinct substance formed by chemical union of two or more ingredients in definite proportion …

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a word that combines two or more different words. Often, the meaning of the compound cannot be discovered by knowing the meaning of the different words that form it. Compounds may be …

Chemistry A substance made up of two or more elements joined by chemical bonds into a molecule. The elements are combined in a definite ratio. Water, for example, is a compound …

A chemical compound is a pure substance made of two or more different elements that are chemically combined in a fixed ratio. The atoms in a compound are bonded together by strong …

Nov 11, 2025 · Chemical compound, any substance composed of identical molecules consisting of atoms of two or more chemical elements. All the matter in the universe is composed of the …

In chemistry, a compound is a substance that consists of two or more elements. Organic compounds contain carbon in their molecules.

Nov 15, 2025 · Definition of compound: In chemistry, a compound is a pure substance that is composed of two, or more different elements, chemically combined with one another in a …

Definition of compound noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

6 days ago · compound (third-person singular simple present compounds, present participle compounding, simple past and past participle compounded) (transitive) To form (a resulting …