adder

Primary Meanings of adder

1.
n
a person who adds numbers
2.
n
small terrestrial viper common in northern Eurasia
Full Definitions of adder
1

n a person who adds numbers

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

n a machine that adds numbers

Type of:
calculating machine, calculator
a small machine that is used for mathematical calculations
2

n small terrestrial viper common in northern Eurasia

Synonyms:
Vipera berus, common viper
Type of:
viper
venomous Old World snakes characterized by hollow venom-conducting fangs in the upper jaw

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