Octa



1.
a combining form occurring in loanwords from Greek and Latin, where it meant “eight” (octagon; octastyle), on this model, used in the formation of compound words, and in chemical terms specialized to mean “having eight atoms” (octavalent).
/ˈɒktə/
noun
1.
a variant spelling of okta
combining form
1.
a variant of octo-

before vowels oct-, word-forming element meaning “eight,” from Greek okta-, okt-, from PIE *okto(u) “eight” (see eight). The variant form octo- often appears in words taken from Latin, but the Greek form is said to be the more common in English.

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  • Octachord

    [ok-tuh-kawrd] /ˈɒk təˌkɔrd/ noun 1. any musical instrument with eight strings. 2. a diatonic series of eight tones. /ˈɒktəˌkɔːd/ noun 1. an eight-stringed musical instrument 2. a series of eight notes, esp a scale

  • Octad

    [ok-tad] /ˈɒk tæd/ noun 1. a group or series of eight. 2. Chemistry. an element, atom, or group having a valence of eight. /ˈɒktæd/ noun 1. a group or series of eight 2. (chem) an element or group with a valency of eight



  • Octadecanoic-acid

    [ok-tuh-dek-uh-noh-ik, ok-] /ˈɒk təˌdɛk əˈnoʊ ɪk, ˌɒk-/ noun, Chemistry. 1. .

  • Octagon

    [ok-tuh-gon, -guh n] /ˈɒk təˌgɒn, -gən/ noun 1. a polygon having eight angles and eight sides. /ˈɒktəɡən/ noun 1. a polygon having eight sides n. 1650s, from Latin octagonos, from Greek oktagononos, literally “eight-angled,” from okta- comb. form of okto “eight” (see eight) + gonia “angle,” related to gony “knee” (see knee (n.)). Also octogon […]



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