a combining form meaning “six,” used in the formation of compound words:
combining form
six: hexachord, hexameter

before vowels, hex-, word-forming element meaning “six,” from Greek hexa-, comb. form of hex “six” (see six).

hexa- or hex-


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  • Hexabasic

    [hek-suh-bey-sik] /ˌhɛk səˈbeɪ sɪk/ adjective 1. containing six hydrogen atoms capable of being replaced or ionized: a hexabasic acid.

  • Hexachloride

    [hek-suh-klawr-ahyd, -klohr-] /ˌhɛk səˈklɔr aɪd, -ˈkloʊr-/ noun 1. a containing six atoms of chlorine.

  • Hexachlorobenzene

    hexachlorobenzene (hěk’sə-klôr’ō-běn’zēn’) See benzene hexachloride.

  • Hexachlorocyclohexane

    /ˌhɛksəˌklɔːrəˌsaɪkləʊˈhɛkseɪn/ noun 1. a white or yellowish powder existing in many isomeric forms. A mixture of isomers, including lindane, is used as an insecticide. Formula: C6H6Cl6

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