LATIN DICTIONARYLexicon Latīnum
noun · masculine

iussū

iussū m
Classical[ˈjʊs.suː]Ecclesiastical[ˈjus.su]

Meaning

  1. ablativesingularablative singular of iussus
  2. with genitiveby the order of
    Ad mortem tē, Catilīna, dūcī iussū cōnsulis iam prīdem oportēbatCatiline, for a long time now it has been fitting that you be led to your death by the Consul’s order […] .63 BCE, Cicero, In Catilinam orationes 1.2

In the Academy Smith's classical dictionaries

AntiquitiesJussuJussu, ACTIO QUOD. A paterfamilias or a master of a slave who gave an order (jussus) authorising a contract to be entered into with his filiusfamilias…

Quick answers

What does iussū mean in Latin?
iussū, a noun, means “ablative singular of iussus; by the order of”.
How do you pronounce iussū?
In classical Latin, [ˈjʊs.suː]; in ecclesiastical (church) Latin, [ˈjus.su].