Found in the following dictionaries
Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Abacus" Definition
noun
A manual computing device consisting of a frame holding parallel rods strung with movable counters.
Source: American Heritage Dictionary
Architecture A slab on the top of the capital of a column.
Source: American Heritage Dictionary
A slab that forms the uppermost member or division of the capital of a column.
Source: Merriam-Webster
An instrument for performing calculations by sliding counters along rods or in grooves.
Source: Merriam-Webster
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