Adder and Adding

noun

• A person who adds numbers.
• A machine that adds numbers.
• Small terrestrial viper common in northern Eurasia.
  • synonyms: common viper, Vipera berus

adverb

• In the Christian era; used before dates after the supposed year Christ was born.
  • usage: "in AD 200"
  • synonyms: AD, A. D., anno Domini

• (n.) One who or that which, adds; especially, a machine for adding numbers.
• (n.) A serpent.
• (n.) A small venomous serpent of the genus Vipera. The common European adder is the Vipera (/ Pelias) berus. The puff adders of Africa are species of Clotho.
• (n.) In America, the term is commonly applied to several harmless snakes, as the milk adder, puffing adder, etc.
• (n.) Same as Sea Adder.