noun, plural de·lir·i·ums, de·lir·i·a [dih-leer-ee-uh] /dɪˈlɪər i ə/.
Origin of delirium
noun plural -liriums or -liria (-ˈlɪrɪə)
Word Origin for delirium
1590s, from Latin delirium "madness," from deliriare "be crazy, rave," literally "go off the furrow," a plowing metaphor, from phrase de lire, from de "off, away" (see de-) + lira "furrow, earth thrown up between two furrows," from PIE *leis- "track, furrow."