| phacelia | (noun) any plant of the genus Phacelia | Synonyms: scorpion weed, scorpionweed |
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| phacoemulsification | (noun) extracapsular surgery for cataracts in which ultrasonic sound breaks the cortex and nucleus of the lens into small fragments that are then vacuumed away through a small tube | - |
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| phaeochromocytoma | (noun) a vascular tumor of the adrenal gland; hypersecretion of epinephrine results in intermittent or sustained hypertension | Synonyms: pheochromocytoma |
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| phaeton | (noun) large open car seating four with folding top | Synonyms: tourer, touring car |
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| phage | (noun) a virus that is parasitic (reproduces itself) in bacteria | Synonyms: bacteriophage |
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| phagocyte | (noun) a cell that engulfs and digests debris and invading microorganisms | Synonyms: scavenger cell |
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| phagocytosis | (noun) process in which phagocytes engulf and digest microorganisms and cellular debris; an important defense against infection | - |
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| phaius | (noun) an orchid of the genus Phaius having large plicate leaves and racemes of showy flowers | - |
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| phalacrosis | (noun) the condition of having no hair on the top of the head | Synonyms: baldness |
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| phalanger | (noun) small furry Australian arboreal marsupials having long usually prehensile tails | Synonyms: opossum, possum |
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| phalangist | (noun) a Spanish member of General Franco's political party | Synonyms: falangist |
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| phalangitis | (noun) inflammation of a finger or toe | - |
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| phalanx | (noun) any of the bones of the fingers or toes | - |
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| (noun) a body of troops in close array | - |
| (noun) any closely ranked crowd of people | - |
| phalarope | (noun) small sandpiper-like shorebird having lobate toes and being good swimmers; breed in the Arctic and winter in the tropics | - |
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| phalloidin | (noun) one of a group of toxins from the death cap (Amanita phalloides) known as phallotoxins. | - |
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| phalloplasty | (noun) reconstructive surgery on the penis to repair congenital abnormality or injury | - |
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| phallus | (noun) the male sex organ | Synonyms: member, penis |
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| phalsa | (noun) drought-resistant Asiatic treelike shrub bearing pleasantly acid small red edible fruits commonly used in sherbets | Synonyms: Grewia asiatica |
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| phanerogam | (noun) plant that reproduces by means of seeds not spores | Synonyms: seed plant, spermatophyte |
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| phaneromania | (noun) an irresistible desire to pick at superficial body parts (as in obsessive nail-biting) | - |
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| phantasm | (noun) something existing in perception only | Synonyms: apparition, fantasm, phantasma, phantom, shadow |
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| (noun) a ghostly appearing figure | Synonyms: apparition, fantasm, phantasma, phantom, specter, spectre |
| phantasma | (noun) something existing in perception only | Synonyms: apparition, fantasm, phantasm, phantom, shadow |
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| (noun) a ghostly appearing figure | Synonyms: apparition, fantasm, phantasm, phantom, specter, spectre |
| phantasmagoria | (noun) a constantly changing medley of real or imagined images (as in a dream) | - |
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| phantasy | (noun) imagination unrestricted by reality | Synonyms: fantasy |
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| (noun) something many people believe that is false | Synonyms: fancy, fantasy, illusion |
| (noun) fiction with a large amount of imagination in it | Synonyms: fantasy |
| phantom | (noun) something existing in perception only | Synonyms: apparition, fantasm, phantasm, phantasma, shadow |
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| (noun) a ghostly appearing figure | Synonyms: apparition, fantasm, phantasm, phantasma, specter, spectre |
| pharisee | (noun) a self-righteous or sanctimonious person | - |
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| pharma | (noun) a company that makes and sells pharmaceuticals | Synonyms: drug company, pharmaceutical company |
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| pharmaceutic | (noun) drug or medicine that is prepared or dispensed in pharmacies and used in medical treatment | Synonyms: pharmaceutical |
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| pharmaceutical | (noun) drug or medicine that is prepared or dispensed in pharmacies and used in medical treatment | Synonyms: pharmaceutic |
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| pharmaceutics | (noun) the art and science of preparing and dispensing drugs and medicines | Synonyms: pharmacy |
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| pharmacist | (noun) a health professional trained in the art of preparing and dispensing drugs | Synonyms: apothecary, chemist, druggist, pill pusher, pill roller |
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| pharmacogenetics | (noun) the branch of genetics that studies the genetically determined variations in responses to drugs in humans or laboratory organisms | - |
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| pharmacokinetics | (noun) the study of the action of drugs in the body: method and rate of excretion, duration of effect, etc. | - |
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| pharmacologist | (noun) someone trained in the science of drugs (their composition and uses and effects) | Synonyms: pharmaceutical chemist |
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| pharmacology | (noun) the science or study of drugs: their preparation and properties and uses and effects | Synonyms: materia medica, pharmacological medicine |
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| pharmacopeia | (noun) (pharmacology) a book containing a compilation of pharmaceutical products with their formulas and methods of preparation | Synonyms: formulary |
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| pharmacopoeia | (noun) a collection or stock of drugs | - |
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| pharmacy | (noun) a retail shop where medicine and other articles are sold | Synonyms: apothecary's shop, chemist's, chemist's shop, drugstore |
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| (noun) the art and science of preparing and dispensing drugs and medicines | Synonyms: pharmaceutics |
| pharos | (noun) a tower with a light that gives warning of shoals to passing ships | Synonyms: beacon, beacon light, lighthouse |
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| pharyngeal | (noun) a consonant articulated in the back of the mouth or throat | Synonyms: guttural, guttural consonant, pharyngeal consonant |
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| pharyngitis | (noun) inflammation of the fauces and pharynx | Synonyms: raw throat, sore throat |
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| pharynx | (noun) the passage to the stomach and lungs; in the front part of the neck below the chin and above the collarbone | Synonyms: throat |
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| phase | (noun) (astronomy) the particular appearance of a body's state of illumination (especially one of the recurring shapes of the part of Earth's moon that is illuminated by the sun) | - |
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| (noun) (physical chemistry) a distinct state of matter in a system; matter that is identical in chemical composition and physical state and separated from other material by the phase boundary | Synonyms: form |
| (noun) any distinct time period in a sequence of events | Synonyms: stage |
| (noun) a particular point in the time of a cycle; measured from some arbitrary zero and expressed as an angle | Synonyms: phase angle |
| phasianid | (noun) a kind of game bird in the family Phasianidae | - |
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| phasmid | (noun) large cylindrical or flattened mostly tropical insects with long strong legs that feed on plants; walking sticks and leaf insects | Synonyms: phasmid insect |
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| pheasant | (noun) large long-tailed gallinaceous bird native to the Old World but introduced elsewhere | - |
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| (noun) flesh of a pheasant; usually braised | - |
| phellem | (noun) (botany) outer tissue of bark; a protective layer of dead cells | Synonyms: cork |
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| phenacetin | (noun) a white crystalline compound used as an analgesic and also as an antipyretic | Synonyms: acetophenetidin, acetphenetidin |
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| phenacomys | (noun) any of several vole-like terrestrial or arboreal rodents of cold forested regions of Canada and western United States | - |
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| phenazopyridine | (noun) analgesic (trade name Pyridium) used to treat urinary tract infections | Synonyms: Pyridium |
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| phencyclidine | (noun) a drug used as an anesthetic by veterinarians; illicitly taken (originally in the form of powder or `dust') for its effects as a hallucinogen | Synonyms: angel dust, PCP, phencyclidine hydrochloride |
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| phenelzine | (noun) monoamine oxidase inhibitor (trade name Nardil) used to treat clinical depression | Synonyms: Nardil |
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| pheniramine | (noun) an antihistamine used in preparations to treat allergies and respiratory infections; used to treat rhinitis and skin rashes and pruritus | - |
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| phenobarbital | (noun) a long-acting barbiturate used as a sedative | Synonyms: Luminal, phenobarbitone, purple heart, sodium thiopental |
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| phenobarbitone | (noun) a long-acting barbiturate used as a sedative | Synonyms: Luminal, phenobarbital, purple heart, sodium thiopental |
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| phenol | (noun) any of a class of weakly acidic organic compounds; molecule contains one or more hydroxyl groups | - |
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| (noun) a toxic white soluble crystalline acidic derivative of benzene; used in manufacturing and as a disinfectant and antiseptic; poisonous if taken internally | Synonyms: carbolic acid, hydroxybenzene, oxybenzene, phenylic acid |
| phenolic | (noun) a thermosetting resin | Synonyms: phenolic resin, phenoplast |
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| phenolphthalein | (noun) a laxative used in many preparations under various trade names; also used as an acid-base indicator in titrations involving weak acids and strong bases because it is brilliant red at high alkalinity and colorless below pH 8 | - |
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| phenomenality | (noun) The state or property of being very remarkable; highly extraordinary; amazing. | - |
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| phenomenology | (noun) a philosophical doctrine proposed by Edmund Husserl based on the study of human experience in which considerations of objective reality are not taken into account | - |
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| phenomenon | (noun) any state or process known through the senses rather than by intuition or reasoning | - |
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| (noun) a remarkable development | - |
| phenoplast | (noun) a thermosetting resin | Synonyms: phenolic, phenolic resin |
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| phenothiazine | (noun) a compound used primarily in veterinary medicine to rid farm animals of internal parasites | Synonyms: thiodiphenylamine |
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| phenotype | (noun) what an organism looks like as a consequence of the interaction of its genotype and the environment | - |
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| phensuximide | (noun) anticonvulsant (trade name Milontin) used to treat petit mal | Synonyms: Milontin |
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| phentolamine | (noun) a virility drug (trade name Vasomax) to treat erectile dysfunction in men | Synonyms: Vasomax |
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| phenylacetamide | (noun) a solid odourless chemical of leaf or flake-like appearance; used in rubber accelerator, dye, and camphor synthesis; metabolised to paracetamol (acetaminophen) | Synonyms: acetanilid, acetanilide |
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| phenylalanine | (noun) an essential amino acid found in proteins and needed for growth of children and for protein metabolism in children and adults; abundant in milk and eggs; it is normally converted to tyrosine in the human body | - |
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| phenylamine | (noun) oily poisonous liquid amine obtained from nitrobenzene and used to make dyes and plastics and medicines | Synonyms: aminobenzine, aniline, aniline oil |
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| phenylbutazone | (noun) anti-inflammatory drug (trade name Butazolidin) | Synonyms: Butazolidin |
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| phenylephrine | (noun) a powerful vasoconstrictor used to dilate the pupils and relieve nasal congestion | - |
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| phenylethylene | (noun) a colorless oily liquid; the monomer for polystyrene | Synonyms: cinnamene, styrene, vinylbenzene |
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| phenylketonuria | (noun) a genetic disorder of metabolism; lack of the enzyme needed to turn phenylalanine into tyrosine results in an accumulation of phenylalanine in the body fluids which causes various degrees of mental deficiency | Synonyms: PKU |
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| phenylpropanolamine | (noun) an adrenergic drug used in many preparations to relieve allergic reactions or respiratory infections | - |
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| phenyltoloxamine | (noun) antihistamine included in some preparations used to treat coughing and nasal congestion | - |
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| phenytoin | (noun) an anticonvulsant drug (trade name Dilantin) used to treat epilepsy and that is not a sedative | Synonyms: Dilantin, diphenylhydantoin |
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| pheochromocytoma | (noun) a vascular tumor of the adrenal gland; hypersecretion of epinephrine results in intermittent or sustained hypertension | Synonyms: phaeochromocytoma |
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| pheresis | (noun) a procedure in which blood is drawn and separated into its components by dialysis; some are retained and the rest are returned to the donor by transfusion | Synonyms: apheresis |
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| pheromone | (noun) a chemical substance secreted externally by some animals (especially insects) that influences the physiology or behavior of other animals of the same species | - |
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| phi | (noun) the 21st letter of the Greek alphabet | - |
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| phial | (noun) a small bottle that contains a drug (especially a sealed sterile container for injection by needle) | Synonyms: ampoule, ampul, ampule, vial |
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| philadelphus | (noun) any of various chiefly deciduous ornamental shrubs of the genus Philadelphus having white sweet-scented flowers, single or in clusters; widely grown in temperate regions | - |
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| philanderer | (noun) a man who likes many women and has short sexual relationships with them | Synonyms: womaniser, womanizer |
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| philanthropist | (noun) someone who makes charitable donations intended to increase human well-being | Synonyms: altruist |
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| philanthropy | (noun) voluntary promotion of human welfare | Synonyms: philanthropic gift |
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| philatelist | (noun) a collector and student of postage stamps | Synonyms: stamp collector |
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| philately | (noun) the collection and study of postage stamps | Synonyms: stamp collecting, stamp collection |
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| philharmonic | (noun) a large orchestra; can perform symphonies | Synonyms: symphony, symphony orchestra |
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| philhellene | (noun) an admirer of Greece and everything Greek | Synonyms: Graecophile, philhellenist |
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| philhellenism | (noun) admiration for Greece and the Greeks and Greek customs | - |
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| philhellenist | (noun) an admirer of Greece and everything Greek | Synonyms: Graecophile, philhellene |
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| philia | (noun) a positive feeling of liking | Synonyms: affection, affectionateness, fondness, heart, tenderness, warmheartedness, warmness |
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| philippic | (noun) a speech of violent denunciation | Synonyms: broadside, tirade |
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| philistine | (noun) a person who is uninterested in intellectual pursuits | Synonyms: anti-intellectual, lowbrow |
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| philistinism | (noun) a desire for wealth and material possessions with little interest in ethical or spiritual matters | Synonyms: materialism |
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| phillipsite | (noun) a group of white or reddish crystalline minerals of the zeolite family consisting of a hydrous silicate of calcium and potassium and aluminum | - |
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| philodendron | (noun) often grown as a houseplant | - |
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| philogyny | (noun) admiration for women | - |
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| philologist | (noun) a humanist specializing in classical scholarship | Synonyms: philologue |
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| philologue | (noun) a humanist specializing in classical scholarship | Synonyms: philologist |
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