| pit viper |
New World vipers with hollow fangs and a heat-sensitive pit on each side of the head
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| pitta |
any bird of the genus Pitta; brilliantly colored chiefly terrestrial birds with short wings and tail and stout bills
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| Pitressin |
vasopressin: hormone secreted by the posterior pituitary gland (trade name Pitressin) and also by nerve endings in the hypothalamus; affects blood pressure by stimulating capillary muscles and reduces urine flow by affecting reabsorption of water by kidney tubules
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| Pitocin |
oxytocin: hormone secreted by the posterior pituitary gland (trade name Pitocin); stimulates contractions of the uterus and ejection of milk
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| pit |
a sizeable hole (usually in the ground); "they dug a pit to bury the body" a concavity in a surface (especially an anatomical depression) stone: the hard inner (usually woody) layer of the pericarp of some fruits (as peaches or plums or cherries or olives) that contains the seed; "you should remove the stones from prunes before cooking" Hell: (Christianity) the abode of Satan and the forces of evil; where sinners suffer eternal punishment; "Hurl'd headlong...To bottomless perdition, there to dwell"- John Milton; "a demon from the depths of the pit" a trap in the form of a concealed hole a surface excavation for extracting stone or slate; "a British term for `quarry' is `stone pit'" set into opposition or rivalry; "let them match their best athletes against ours"; "pit a chess player against the Russian champion"; "He plays his two children off against each other" orchestra pit: lowered area in front of a stage where an orchestra accompanies the performers scar: mark with a scar; "The skin disease scarred his face permanently" colliery: a workplace consisting of a coal mine plus all the buildings and equipment connected with it remove the pits from; "pit plums and cherries"
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