parasitism
— Noun
– English
～ the relation between two different kinds of organisms in which one receives benefits from the other by causing damage to it (usually not fatal damage)
parasol
— Noun
– English
～ a handheld collapsible source of shade
parasol mushroom
— Noun
– English
～ edible long-stalked mushroom with white flesh and gills and spores; found in open woodlands in autumn
parasympathetic
— Noun
– English
～ originates in the brain stem and lower part of the spinal cord; opposes physiological effects of the sympathetic nervous system: stimulates digestive secretions; slows the heart; constricts the pupils; dilates blood vessels
parasympathetic
— Adjective
– English
～ of or relating to the parasympathetic nervous system
parasympathomimetic
— Adjective
– English
～ having an effect similar to that resulting from stimulation of the parasympathetic nervous system; "parasympathomimetic drugs slow the heart rate"
Parathelypteris
— Noun
– English
～ terrestrial ferns of warm and tropical Asia and North America
Parathelypteris novae-boracensis
— Noun
– English
～ slender shield fern of moist woods of eastern North America; sometimes placed in genus Dryopteris
parathion
— Noun
– English
～ a colorless and odorless toxic oil used as an insecticide
parathormone
— Noun
– English
～ hormone synthesized and released into the blood stream by the parathyroid glands; regulates phosphorus and calcium in the body and functions in neuromuscular excitation and blood clotting
parathyroid
— Noun
– English
～ any one of four endocrine glands situated above or within the thyroid gland
parathyroid gland
— Noun
– English
～ any one of four endocrine glands situated above or within the thyroid gland
parathyroid hormone
— Noun
– English
～ hormone synthesized and released into the blood stream by the parathyroid glands; regulates phosphorus and calcium in the body and functions in neuromuscular excitation and blood clotting
paratrooper
— Noun
– English
～ a soldier in the paratroops
paratroops
— Noun
– English
～ infantry trained and equipped to parachute
paratyphoid fever
— Noun
– English
～ any of a variety of infectious intestinal diseases resembling typhoid fever
paratyphoid
— Noun
– English
～ any of a variety of infectious intestinal diseases resembling typhoid fever
Parazoa
— Noun
– English
～ multicellular organisms having less-specialized cells than in the Metazoa; comprises the single phylum Porifera
parazoan
— Noun
– English
～ primitive multicellular marine animal whose porous body is supported by a fibrous skeletal framework; usually occurs in sessile colonies
parboil
— Verb
– English
～ cook (vegetables) briefly; "Parboil the beans before freezing them"