Dictionary

All Word
polyurethane foam Noun a foam made by adding water to polyurethane plastics
perfect gas Noun a hypothetical gas with molecules of negligible size that exert no intermolecular forces
printer's ink Noun a semisolid quick drying ink made especially for use in printing
printing ink Noun a semisolid quick drying ink made especially for use in printing
pahoehoe Noun freely flowing lava
pillow lava Noun lava that hardened in rounded shapes suggestive of pillows
pluton Noun large mass of intrusive igneous rock believed to have solidified deep within the earth
pesticide Noun a chemical used to kill pests (as rodents or insects)
petrochemical Noun any compound obtained from petroleum or natural gas
petroleum Noun a dark oil consisting mainly of hydrocarbons
periodic acid Noun any acid of iodine that contains oxygen
plant fiber Noun fiber derived from plants
pad of paper Noun a number of sheets of paper fastened together along one edge
plant fibre Noun fiber derived from plants
palmitic acid Noun a saturated fatty acid that is the major fat in meat and dairy products
palmitin Noun an ester of glycerol and palmitic acid
pantothenic acid Noun a vitamin of the vitamin B complex that performs an important role in the oxidation of fats and carbohydrates and certain amino acids
pantothen Noun a vitamin of the vitamin B complex that performs an important role in the oxidation of fats and carbohydrates and certain amino acids
papain Noun a proteolytic enzyme obtained from the unripe papaya
para aminobenzoic acid Noun a metabolic acid found in yeast and liver cells
paraquat Noun a poisonous yellow solid used in solution as a herbicide
paper tape Noun a long narrow strip of paper
paper toweling Noun absorbent paper used as toweling
papier-mache Noun a substance made from paper pulp that can be molded when wet and painted when dry
paper-mache Noun a substance made from paper pulp that can be molded when wet and painted when dry
packing material Noun any material used especially to protect something
pantile Noun a roofing tile with a S-shape
parget Noun plaster used to coat outer walls and line chimneys
parget Verb apply ornamental plaster to
paving material Noun material used to pave an area
pearlite Noun a lamellar mixture of cementite and ferrite formed during the cooling of austenite
pectic acid Noun a complex acid that occurs in ripe fruit and some vegetables
pectin Noun any of various water-soluble colloidal carbohydrates that occur in ripe fruit and vegetables
pediculicide Noun a chemical agent that kills lice
penicillinase Noun enzyme produced by certain bacteria that inactivates penicillin and results in resistance to that antibiotic
pepsin Noun an enzyme produced in the stomach that splits proteins into peptones
pepsinogen Noun precursor of pepsin
perboric acid Noun a form of boric acid
perfluorocarbon Noun a powerful greenhouse gas emitted during the production of aluminum
polyamide Noun a polymer containing repeated amide groups
permanganate Noun a dark purple salt of permanganic acid
polymeric amide Noun a polymer containing repeated amide groups
permanganic acid Noun an unstable purple acid (HMnO4) known only in solution or of permanganate salts
peroxidase Noun any of a group of enzymes (occurring especially in plant cells) that catalyze the oxidation of a compound by a peroxide
peridot Noun a pale green variety of chrysolite
podzol soil Noun a soil that develops in temperate to cold moist climates under coniferous or heath vegetation
podsol Noun a soil that develops in temperate to cold moist climates under coniferous or heath vegetation
podsol soil Noun a soil that develops in temperate to cold moist climates under coniferous or heath vegetation
podsolic soil Noun a soil that develops in temperate to cold moist climates under coniferous or heath vegetation
poison gas Noun a gas that is poisonous to breath or contact