Viperidae definitions

Viperidae

1) Family viperidae 2) Old world vipers 3) Reptile family
Found on https://www.crosswordclues.com/clue/viperidae

The Viperidae (vipers) are a family of venomous snakes found all over the world, except in Antarctica, Australia, New Zealand, Ireland, Madagascar, Hawaii, various other isolated islands, and north of the Arctic Circle. All have relatively long, hinged fangs that permit deep penetration and injection of venom. Four subfamilies are currently recogn...
Found on http://en.wikipedia.org/wiki/Viperidae

viperidae

A family of snakes comprising three subfamilies: azemiopinae (the mountain viper, the sole member of this subfamily), viperinae (true vipers), and crotalinae (pit vipers). They are widespread throughout the world, being found in the united states, central and south america, europe, asia and africa. Their venoms act on the blood (haemotoxic) as comp...
Found on http://www.encyclo.co.uk/local/20973

Viperidae

Type: Term Pronunciation: vī-per′i-dē Definitions: 1. A family of poisonous Old World snakes, the true vipers, composed of about 50 species and characterized by two relatively long caniculated fangs at the front of the upper jaw that are attached to movable bones, allowing them to be erect during the bite when the mouth is open, and...
Found on http://www.medilexicon.com/medicaldictionary.php?t=98694

Viperidae

Viperidae is the 'typical vipers' family of reptiles of the sub-order serpentes (Snakes). The family comprises three sub-families, eleven genera and about 49 species native to Europe, Asia and Africa living in temperate and tropical climates.
Found on http://www.probertencyclopaedia.com/browse/BV.HTM