algorism

[al-guh-riz-uh m] /ˈæl gəˌrɪz əm/
noun, Mathematics Now Rare.
1.
the Arabic system of arithmetical notation (with the figures 1, 2, 3, etc.).
2.
the art of computation with the Arabic figures, one to nine, plus the zero; arithmetic.
3.
algorithm.
Origin
1200-1250; < Medieval Latin algorismus < Arabic al the + kh(u)wārizmī (surname of a 9th-century Muslim mathematician), equivalent to khwārizm Khiva + -ī suffix of appurtenance; replacing Middle English augrim, algrim < Middle French < Medieval Latin
Related forms
algorismic, adjective
British Dictionary definitions for algorism

algorism

/ˈælɡəˌrɪzəm/
noun
1.
the Arabic or decimal system of counting
2.
the skill of computation using any system of numerals
3.
another name for algorithm
Derived Forms
algorismic, adjective
Word Origin
C13: from Old French algorisme, from Medieval Latin algorismus, from Arabic al-khuwārizmi, from the name of abu-Ja`far Mohammed ibn-Mūsa al-Khuwārizmi, ninth-century Persian mathematician