adder

Noun
  1. A person who adds numbers (synset 109788176)
    is a type of: calculator, computer, estimator, figurer, reckoner - an expert at calculation (or at operating calculating machines)
  2. A machine that adds numbers (synset 102681996)
    is a type of: calculating machine, calculator - a small machine that is used for mathematical calculations; can be mechanical or electronic
  3. Small terrestrial viper common in northern Eurasia (synset 101755226)
    is a type of: viper - venomous Old World snakes characterized by hollow venom-conducting fangs in the upper jaw
    belongs to: genus vipera, vipera - type genus of the Viperidae
    same as: common viper, vipera berus

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