Obstruction
来自Big Physics
mid 16th century: from Latin obstructio(n- ), from the verb obstruere (see obstruct).
wiktionary
From Latin obstructio(“hindrance”), from obstruo(“build against, block, stop”).
etymonline
obstruction (n.)
"action of blocking up a way or passage, act of impeding passage or movement; fact of being obstructed," 1530s, from Latin obstructionem (nominative obstructio) "an obstruction, barrier, a building up," noun of action from past-participle stem of obstruere "build up, block, block up, build against, stop, bar, hinder," from ob "in front of, in the way of" (see ob-) + struere "to pile, build" (from PIE *streu-, extended form of root *stere- "to spread"). Figurative use is by 1650s.
