adder

nouns

a person who adds numbers
adder
is a type of (narrower)
an expert at calculation (or at operating calculating machines)
calculator, computer, estimator, figurer, reckoner
a machine that adds numbers
adder
is derived from
add
is derived from
add
is a type of (narrower)
a small machine that is used for mathematical calculations
calculating machine, calculator
small terrestrial viper common in northern Eurasia
Vipera berus, adder, common viper