acu·mi·na·tion
| \ ə-ˌkyü-mə-ˈnā-shən, ˌa- \
plural -s
Definition of acumination
: a sharpening or giving point to
also
: a tapering point
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Merriam-Webster unabridged
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Time Traveler for acumination
The first known use of acumination was in 1651
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