reckoner

/ˈrɛk(ə)nər/

Other forms: reckoners

Definitions of reckoner

1. noun

   an expert at calculation (or at operating calculating machines)
   synonyms: calculator, computer, estimator, figurer

   types:

   adder

   a person who adds numbers

   number cruncher

   someone able to perform complex and lengthy calculations

   actuary, statistician

   someone versed in the collection and interpretation of numerical data (especially someone who uses statistics to calculate insurance premiums)

   subtracter

   a person who subtracts numbers

   surveyor

   someone who conducts a statistical survey

   type of:

   expert, pundit

   a person with special knowledge or ability who performs skillfully
2. noun

   a handbook of tables used to facilitate computation
   synonyms: ready reckoner

   type of:

   enchiridion, handbook, vade mecum

   a concise reference book providing specific information about a subject or location