Definition of "adder" in Englisch

noun

1. (obsolete) Any snake.

2. A name loosely applied to various snakes more or less resembling a viper.

3. A sea stickleback or adder fish (Spinachia spinachia).

noun

1. Someone who or something which performs arithmetic addition; a machine for adding numbers.

2. An electronic device that adds voltages, currents or frequencies.

3. Something which adds or increases.

   • They sought out cost adders with an eye toward eliminating them.