11 letters · 15 points in Scrabble
noun tight or narrow compression
noun (biology) a narrowing or constriction of a vessel or canal; especially a congenital narrowing of the aorta
originBorrowed from Latin coarctātiō (“drawing or crowding together”, noun), from coarctō (“to press together, compress, contract, confine”) + -ātiō (“-ation”, action noun suffix); equivalent to coarctate + -ion.
Etymology from Wiktionary, CC BY-SA 3.0