Ancient Greek

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Etymology

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Rebracketed from ordinals like τεσσαρακοστός (tessarakostós), from Proto-Hellenic *kʷetwərəkontstós equivalent to τεσσαράκοντα (tessarákonta) +‎ -τός (-tós). The *tst (> st) results from the Indo-European double dental rule.

Pronunciation

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Suffix

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-στός (-stósm (feminine -στή, neuter -στόν); first/second declension

  1. Alternative form of -τος (-tos), forming ordinal and fractional numerals
    ἑκατόν (hekatón, a hundred) + ‎-στός (-stós) → ‎ἑκατοστός (hekatostós, hundredth)
    χίλιοι (khílioi, thousand) + ‎-στός (-stós) → ‎χιλιοστός (khiliostós, thousandth)

Declension

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