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 by weight.

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 written …

If you compound a problem you add something to it to make it worse, like say, putting water on a grease fire. Compound means to combine; a compound is a combination or mixture of two or more things.

To compound a problem, difficulty, or mistake means to make it worse by adding to it.

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

(music) An octave higher than originally (i.e. a compound major second is equivalent to a major ninth).

Feb 21, 2026 · compound (third-person singular simple present compounds, present participle compounding, simple past and past participle compounded) (transitive) To form (a resulting mixture) …

having or involving two or more actions or functions: The mouth is a compound organ. Grammar of or pertaining to a compound sentence or compound-complex sentence.

A compound is a substance that is formed from two or more elements chemically bonded together in a fixed ratio by weight. Typically, the properties of the compound are distinct from those of the …

COMPOUND definition: composed of two or more parts, elements, or ingredients. See examples of compound used in a sentence.