isopsephy

From Koine Greek ἰσοψηφία (isopsēphía), from ἴσος (ísos, “equal”) and ψῆφος (psêphos, “pebble”). The early Greeks used pebbles arranged in patterns to learn arithmetic and geometry.

• IPA^(key): /ˈaɪsəpˌsɛfi/

isopsephy (uncountable)

1. The practice of adding up the numerical values of the letters in a word to form a single number.

• gematria