Ancient Greek

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Etymology

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From ὀρθός (orthós) +‎ -ιος (-ios).

Pronunciation

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Adjective

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ὄρθῐος (órthiosm (feminine ὀρθί̆ᾱ, neuter ὄρθῐον); first/second declension

  1. straight, steep, uphill; upright, standing
  2. (of voice, sound) high-pitched, shrill
  3. (military) formed in column (opp. in line or extended front)
  4. (geometry) right angle

Inflection

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Derived terms

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References

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