pit viper

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1. any snake of the viperid and crotalid families (the true vipers and the pit vipers).
2. a term sometimes used to refer to any venomous snake.
Old World viper true viper.
pit viper any of a family of venomous snakes found in North America including the many types of rattlesnakes (genera Crotalus and Sistrurus), as well as the copperheads and water moccasins (both of genus Agkistrodon).
Russell's viper Vipera russellii, a true viper of Southeast Asia whose venom (Russell's viper venom) is used in blood tests.
true viper any of a large family of venomous snakes found in Africa, parts of Europe, Asia, and adjacent islands, but not in the Americas or Australia; it includes cobras and adders, among others. Called also Old World viper, viperid, and viperine.

pit viper

Any of various venomous snakes of the subfamily Crotalinae, such as the copperhead, rattlesnake, or fer-de-lance, characterized by a small sensory pit below each eye.

pit viper

Etymology: AS, pytt + L, vipera, snake
any one of a family of venomous snakes found in the Western Hemisphere and Asia, characterized by a heat-sensitive pit between the eye and nostril on each side of the head and hollow perforated fangs that are usually folded back in the roof of the mouth. With the exception of coral snakes, all indigenous poisonous snakes in the United States are pit vipers. See also copperhead, cottonmouth, rattlesnake.
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Pit viper


1. a hollow fovea or indentation.
2. a pockmark.
3. to indent, or to become and remain for a few minutes indented, by pressure.
4. seed of a fruit, e.g. cherry. Strictly refers to the hard woody coating which surrounds the seed.

anal pit
the proctodeum of the embryo.
auditory pit
a distinct depression in each auditory placode, marking the beginning of the embryonic development of the internal ear.
pit bull
a term used in describing various types of dogs used in past times for fighting in pits. Now, usually refers to the specific breed, american pit bull terrier.
lens pit
a pitlike depression in the fetal head where the lens develops.
nasal pit
a depression appearing in the olfactory placodes in the early stages of development of the nose. Called also olfactory pit.
olfactory pit
see nasal pit (above).
otic pit
early stage in the development of the embryonic inner ear.
pit pony
pony used in a mine to haul mined rock. Breed varies as long as it is small, e.g. Shetland pony.
pit of stomach
the epigastric fossa or epigastric region.
pit viper
see viper.
References in periodicals archive ?
Friends of Pit Viper have been rocking the shades for years now, testing durability across every extreme sport.
The name pit viper is derived from the presence of a heat sensing pit organ located on the head.
The initial symptoms after a bite from a pit viper are usually pain and swelling around the bite, with physical signs of fang marks, hemorrhagic vesicles, and tenderness at the bite site.
Two published estimates of apparent annual survival for North American pit vipers based on robust estimators for timber rattlesnakes Crotalus horridus (Brown et al.
In a later stomach content analysis performed by opening the stomach and intestines of this pit viper specimen, an undigested Porthidium lansbergii (Schlegel, 1841) neonate (ANDES-R 171), with a total length of 180 mm, was found (Fig.
The most serious effects of most pit viper bites, including that of rattlers, is extensive local tissue damage and serious coagulopathies.
Viprinex is a defibrinogenating agent derived from the venom of the Malayan pit viper.
2) None of our patients had the severe tissue damage seen with pit viper bites, but not seen in previous coral snake studies.
The gorgeous Sabah Pit Viper looks like a garden hose with an attitude and has so far eluded much observation while the Keeled Rat Snake, which actually does resemble a rat, keeps no secrets as to its habits and eggs.
A species of torrent frog (Hylodes asper) is a common prey to two species of pit viper (Bothrops jararacussu and B.
Nordmark will manufacture the biological active ingredient, ancrod, which is derived from the venom of the Malayan pit viper (Ancistrodon rhodostoma).
Martin in February, learning that AFMC is on the cutting edge of research, considering everything from the latest in robotics, to the heat-sensor ability of a pit viper, to the self-healing capabilities of human cells, in its drive to deliver to the warfighter.