(linguistics) A word composed of two or more stems. Examples include pancake, two-tone, and school bus. In English, it may or may not have a space or hyphen.

(grammar) A compound word with spaces in it, for example, high school, school bus, or science fiction.

(chemistry) Any of a class of compounds in which a central metal atom (normally a transition element) is surrounded by a group of ions or molecules (ligands).

Synonym of coordination compound

(chemistry) an organic compound having at least one metal-to-carbon bond

(chemistry) an organic compound of the general formula R-N=N-R¹; they are often coloured and are the basis of many synthetic dyes; a diazene

(grammar) a sentence that has two or more independent clauses, joined by a conjunction (such as 'but', 'and') and/or punctuation (such as ',').

(inorganic chemistry) Any compound not containing carbon atoms. / (inorganic chemistry) Any compound containing carbon atoms ionically bound to other atoms.

(chemistry) Any compound containing a cation of general formula R₄As⁺; the arsenic analogue of quaternary ammonium compounds.

(chemistry) any compound of general formula RN=N-NR₂ where not all R = H