reckonmasterEtymologyFrom reckon + master. Compare West Frisian reckenmaster, rekkenmaster (“accountant”), Dutch rekenmeester (“accountant”), German Rechenmeister (“reckoner; arithmetician”).reckonmaster means A mathematician or arithmetician. Lexicurio rates it Rare gem — a strength score of 82 out of 100.nounA mathematician or arithmetician.“For the common Logist, Reckenmaster, or Arithmeticien, in hys vsing of Numbers: of an Vnit, imagineth lesse partes: and calleth them Fractions.”