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Definition of: chronometer
(krə·nom′ə·tər) noun 
A portable timekeeping instrument of high precision and accuracy for use in navigation and scientific work. [<CHRONO- + -METER] 
—chron·o·met·ric (kron′ə·met′rik) or ·ri·cal adjective 
—chron′o·met′ri·cal·ly adverb
 
				
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