EtymEx

erection

/ɪˈrɛkʃən/noun

The act or result of setting something upright

From Latin ē- (Out of) + Latin regō (To direct).

Lineage

ē-

regō

LatinGermanicnot directly attestedSelect a stage for details, or drag it

The story

Latin ērigō joined ē-, “out of,” with regō, “to direct or guide,” to make a verb meaning “raise” or “set upright.” Its family includes direct and correct: both carry the old image of guiding something along a straight course. By the early 15th century, medical writers were already using erection for penile stiffening; by the 1590s, it could also describe putting up a building. So the same word can summon either scaffolding rising over a street or a very different kind of bodily “setting up.”

Modern usage

A joking or crude reference to a penile erection

Heard in
sexual slang · online slang

Related words

Confused with
ejection, election

Words from the same roots

ē- · Latin, ‘Out of; forth’

Derivedegress, eject, evict, emit

regō · Latin, ‘To direct, guide, or rule’

Derivederect, direct, correct, regent, regime, region

Sources