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1590s, from Latin obstipationem (nominative obstipatio), noun of action from *obstipare "action of blocking or stopping up," from ob- (see ob-) + stipare "to press together, to pack" (see stiff (adj.)).
obstipation ob·sti·pa·tion (ŏb'stə-pā'shən)n. Intestinal obstruction; severe constipation.