adder(redirected from half adders)
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Common name for many members of the family Viperidae (the vipers), applied to several genera, although true adders are of the genus Vipera.
[M.E. naddre, fr. O.E. nāedre]
1. Vipera berus.
death adder Acanthophis antarcticus, an extremely venomous elapid snake of Australia and New Guinea with a short, stout body and a tail with a spine at the tip.
puff adder Bitis arrietans, an extremely venomous, brightly colored, viperine snake found in Africa and Arabia; when annoyed it inflates its stubby body and hisses loudly.
1. Any of several venomous snakes, especially a viper of the subfamily Viperinae.
2. Any of several nonvenomous snakes, such as the hognose snake, often believed to be harmful.
any of numerous venomous elapid and viperine snakes. The death adder is found in Australia and New Guinea, and the puff adder is found in Africa and Arabia. See also snakebite.
a loose nomenclature of snakes which cuts across scientific classification. Includes puff adder, common English adder which are viperine snakes, and the Australian adder which is an elapine snake.
gray-brown, dark, banded, 30 inch Australian elapid snake which is aggressive and a rapid striker. The venom is a potent toxin. The bite often leaves no mark but is usually fatal. Called also Acanthophis antarcticus.
desert death adder
a specially adapted, smaller desert form of the death adder. Called also Acanthophis antarcticus pyrrhus.
Bitis arietans, an unaggressive but highly poisonous African snake, 3 to 5 ft long with a thick body.