From Latin 'erigere' (to set up) — 'e-' + 'regere' (to guide straight), from PIE *h3reg- (to move in a straight line).
Rigidly upright or straight; to construct or build something; to put into an upright position.
From Latin 'ērēctus,' past participle of 'ērigere' (to set up, to raise upright, to erect), from 'ē-' (out, up, away from) + 'regere' (to guide straight, to rule, to direct). The PIE root is *h₃reǵ- meaning 'to move in a straight line, to direct, to keep straight.' This root is one of the most productive in Latin: it also gave 'rex' (king — the one who keeps things straight), 'regula' (rule, ruler), 'rectus' (straight, right), 'dirigere' (to direct), and through Germanic