1

adder

noun ad·der \ ˈa-dər \
Updated on: 15 Nov 2017

Definition of adder

1 : the common venomous viper (Vipera berus) of Europe; broadly : any of various snakes of the viper family — compare puff adder
2 : any of several North American snakes (such as the hognose snakes) that are harmless but are popularly believed to be venomous

Illustration of adder

Origin and Etymology of adder

Middle English addre, eddre, alteration (resulting from misdivision of a naddre) of naddre, neddre, going back to Old English nǣdre "adder, snake," going back to West Germanic nēdrōn- (whence also Old Saxon nādra "grass snake [Natrix natrix or allied species]," Old High German nātara, nāter), going back to dialectal (western) Indo-European *neh1tr-, full-grade ablaut of *nh1tr- (whence Old Norse naðr "adder, snake," Gothic nadrs "snake, viper," Latin natric-, natrix "water snake [as Natrix maura]," Old Irish nathir [genitive singular nathrach] "snake," Welsh neidr [plural nadredd], Breton aer, naer "grass snake"), perhaps from *(s)neh1- "twist together, spin" + *-tr-, -ter-, agent suffix (hence "one who winds, twists") — more at 1needle


2

adder

noun add·er \ ˈa-dər \

Definition of adder

: one that adds; especially : a device (as in a computer) that performs addition

Origin and Etymology of adder


ADDER Defined for Kids

adder

noun ad·der \ ˈa-dər \

Definition of adder for Students

1 : a poisonous snake of Europe or Africa
2 : a harmless North American snake

Medical Dictionary

adder

noun ad·der \ ˈad-ər \

medical Definition of adder

1 : the common venomous European viper of the genus Vipera (V. berus); broadly : a terrestrial viper of the family Viperidae
2 : any of several North American snakes (as the hognose snakes) that are harmless but are popularly believed to be venomous

Illustration of adder



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