LATIN DICTIONARYLexicon Latīnum
noun · neutersecond declension

mutūnium

mutūnium n (genitive mutūniī or mutūnī)
Classical[mʊˈtuː.ni.ũː]Ecclesiastical[muˈtuː.ni.um]

Meaning

  1. vulgarpenis
    [pumpeis] fueere·quondam·uibii·opulentissumi non·ideo·tenuerunt·in manu·sceptrum pro mutunió itidem quod·tu·factitas·cottidie·in manu penem tenes[in Pompeii?] there once were the very wealthy Vibii, They did not hold in their hands a scepter for a member(?) in the way that you frequently do every day holding your penis in your hand.before 79 AD, C.I.L 4.1939 (graffiti inscribed in the basilica of Pompeii)
    muthuniumbefore 79 AD, C.I.L 4.1940 (Pompeiian graffiti)

Declension

declension
formsingularplural
nominativemutūnium
mutōnium
mutūnia
mutōnia
genitivemutūniī
mutūnī, mutōnī, mutōniī
mutūniōrum
mutōniōrum
dativemutūniō
mutōniō
mutūniīs
mutōniīs
accusativemutūnium
mutōnium
mutūnia
mutōnia
ablativemutūniō
mutōniō
mutūniīs
mutōniīs
vocativemutūnium
mutōnium
mutūnia
mutōnia

Origins

Probably from mūtō (“penis”) + -ium; compare pecūlium (used with a sexual sense in Plautus and Petronius). The derived adjective mutūniātus scans with a short first syllable; Weiss (1996) proposes that this is a case of a geminate being shortened after an unaccented vowel, as seen in sacellus for saccellus (compare mamilla from mamma). The reason for the variation in the vowel in the second syllable is unclear. Weiss proposes the following origin for forms with ū in this family of words: initially, the root was combined with the suffix -īnus, forming an adjective mū̆tīnus. After becoming used as the name of a god, Mutunus Tutunus, the form Mū̆tīnus was altered to Mū̆tūnus under the influence of other deity names ending in -ūnus, such as Neptūnus and Portūnus, and then the ū in the second syllable of Mū̆tūnus served as the basis of ū in the second syllable of forms like mū̆tūnium and mutūniātus.

Quick answers

What does mutūnium mean in Latin?
mutūnium, a noun, means “penis”.
What is the genitive of mutūnium?
The genitive singular is mutūniī. mutūnium is neuter, second declension.
How do you pronounce mutūnium?
In classical Latin, [mʊˈtuː.ni.ũː]; in ecclesiastical (church) Latin, [muˈtuː.ni.um].