Etymology
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whorl (n.)
mid-15c., "the small flywheel of a spindle," perhaps an alteration of whirl. Meaning "circlar arrangement of leaves or flowers round a stem of a plant" is first recorded 1550s. Of seashells or other spiral structures, from 1828. Related: Whorled.
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fingerprint (n.)
also finger-print, 1834, from finger (n.) + print (n.). Attempts to classify fingerprint types as a means of identification began in the 1820s; the current arch-loop-whorl system was introduced by Francis Galton in 1892. Admissibility as evidence as valid proof of guilt in murder trials in U.S. was upheld in 1912. From 1900 as a verb. Related: Fingerprinted; fingerprinting.
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