loop noun \ˈlüp\
: a curving or doubling of a line so as to form a closed or partly open curve within itself through which another line can be passed
a : something (as an anatomical part) shaped like a loop—see loop of henle; lippes loop b : a surgical electrode in the form of a loop
: a fingerprint in which some of the papillary ridges make a single backward turn without any twist
: a wire usually of platinum bent at one end into a small loop (usually four millimeters in inside diameter) and used in transferring microorganisms
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