Latin

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Latin numbers (edit)
40
[a], [b] ←  3 IV
4
5  → 
    Cardinal: quattuor
    Ordinal: quārtus
    Adverbial: quater
    Proportional: quadruplus
    Multiplier: quadruplex
    Distributive: quaternus, quadrīnus
    Collective: quaterniō
    Fractional: quadrāns, teruncius

Etymology

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Analogous formation after the organic trīnus, from quadri- +‎ -nus.

Pronunciation

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Numeral

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quadrīnus (feminine quadrīna, neuter quadrīnum); first/second-declension numeral

  1. four each
  2. quadruple
  3. (pluralibus tantum) four

Declension

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First/second-declension adjective.

Number Singular Plural
Case / Gender Masculine Feminine Neuter Masculine Feminine Neuter
Nominative quadrīnus quadrīna quadrīnum quadrīnī quadrīnae quadrīna
Genitive quadrīnī quadrīnae quadrīnī quadrīnum
quadrīnōrum
quadrīnum
quadrīnārum
quadrīnum
quadrīnōrum
Dative quadrīnō quadrīnō quadrīnīs
Accusative quadrīnum quadrīnam quadrīnum quadrīnōs quadrīnās quadrīna
Ablative quadrīnō quadrīnā quadrīnō quadrīnīs
Vocative quadrīne quadrīna quadrīnum quadrīnī quadrīnae quadrīna

References

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  • quadrini in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
  • quadrini”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press