Of, relating to, or constituting a chiliad; organized or grouped by thousands.
From 'chiliad' + '-ic' (a suffix forming adjectives meaning 'of or pertaining to'). The root 'chiliad' derives from Greek 'khiliás' (thousand), and '-ic' comes from Latin and Greek adjectival endings.
In ancient Athens, the military and administrative system used 'chiliarch' (commanders of one thousand), making 'chiliadic' the technical term for this organizational structure—showing how words preserve memories of ancient military hierarchies long after those systems disappeared.
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