dimidius

Latin

**Latin numbers ^(edit)**
	20^{[a], [b], [c], [d], [e]}
← 1	II 2	3 →
Cardinal: duo Ordinal: secundus, alter Adverbial: bis Multiplier: duplex, duplus Distributive: bīnus Collective: bīniō Fractional: dīmidius, sēmis

dis- (“in two”) +‎ medius (“middle”)

dīmidius (feminine dīmidia, neuter dīmidium); first/second-declension adjective

Case / Gender	Masculine	Feminine	Neuter	Masculine	Feminine	Neuter
Number	Singular			Plural
Nominative	dīmidius	dīmidia	dīmidium	dīmidiī	dīmidiae	dīmidia
Genitive	dīmidiī	dīmidiae	dīmidiī	dīmidiōrum	dīmidiārum	dīmidiōrum
Dative	dīmidiō	dīmidiae	dīmidiō	dīmidiīs
Accusative	dīmidium	dīmidiam	dīmidium	dīmidiōs	dīmidiās	dīmidia
Ablative	dīmidiō	dīmidiā	dīmidiō	dīmidiīs
Vocative	dīmidie	dīmidia	dīmidium	dīmidiī	dīmidiae	dīmidia

Vulgar Latin: *dimedium
- French: demi
  - → English: demi-, demy
- Old Occitan: demiey
- → Welsh: dimei

“dimidius”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
“dimidius”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
dimidius in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
dimidius in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
Walther von Wartburg (1928–2002) “dimĭdius”, in Französisches Etymologisches Wörterbuch (in German), volumes 3: D–F, page 80