truncus

English

A mathematical graph of the basic truncus formula, marked in blue, with domain and range both restricted to [5, 5].

Etymology

From Latin truncus. Doublet of tronk and trunk.

Noun

truncus (plural trunci)

1. (biology) The thorax of an insect.
2. (medicine) The trunk (torso) of the human body or other animal body.
3. (medicine) An arterial trunk, such as the truncus arteriosus.
4. (geometry) A curve in the Cartesian plane consisting of all points (x,y) satisfying an equation of the form ${\displaystyle f(x)={a \over (x+b)^{2}}+c}$ where a, b, and c are given constants.

Latin

Etymology

Unknown origin, but possibly from Proto-Indo-European *twerḱ- (to cut). Cognate with Ancient Greek σάρξ (sárx), Old Irish tru, troich (fated to die) and Latin trux[1] [2][3] and Proto-Slavic *strǫkъ.

Pronunciation

truncus (feminine trunca, neuter truncum); first/second-declension adjective

Declension

Number Singular Plural Case / Gender Masculine Feminine Neuter truncus trunca truncum truncī truncae trunca truncī truncae truncī truncōrum truncārum truncōrum truncō truncō truncīs truncum truncam truncum truncōs truncās trunca truncō truncā truncō truncīs trunce trunca truncum truncī truncae trunca

Descendants

• Spanish: trunco

Noun

truncus m (genitive truncī); second declension

1. A tree trunk.
2. () The thorax of an insect.
3. () The trunk (torso) of the human body or other animal body.
4. () An arterial trunk, such as the truncus arteriosus.
5. A piece cut off.

Declension

Second-declension noun.

Case Singular Plural
Nominative truncus truncī
Genitive truncī truncōrum
Dative truncō truncīs
Accusative truncum truncōs
Ablative truncō truncīs
Vocative trunce truncī

References

• truncus”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• truncus”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• truncus 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)
• truncus in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette
1. ^ Partridge, Origins: A Short Etymological Dictionary of Modern English
2. ^ Partridge, Origins: A Short Etymological Dictionary of Modern English
3. ^ De Vaan, Michiel (2008) Etymological Dictionary of Latin and the other Italic Languages (Leiden Indo-European Etymological Dictionary Series; 7)‎[1], Leiden, Boston: Brill, →ISBN