| physicalness | (noun) the quality of being physical; consisting of matter | Synonyms: corporality, corporeality, materiality |
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| physician | (noun) a licensed medical practitioner | Synonyms: doc, doctor, Dr., MD, medico |
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| physicist | (noun) a scientist trained in physics | - |
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| physics | (noun) the science of matter and energy and their interactions | Synonyms: natural philosophy |
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| (noun) the physical properties, phenomena, and laws of something | Synonyms: physical science |
| physiognomy | (noun) the human face (`kisser' and `smiler' and `mug' are informal terms for `face' and `phiz' is British) | Synonyms: countenance, kisser, mug, phiz, smiler, visage |
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| physiography | (noun) the study of physical features of the earth's surface | Synonyms: physical geography |
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| physiologist | (noun) a biologist specializing in physiology | - |
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| physiology | (noun) processes and functions of an organism | - |
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| (noun) the branch of the biological sciences dealing with the functioning of organisms | - |
| physiotherapist | (noun) therapist who treats injury or dysfunction with exercises and other physical treatments of the disorder | Synonyms: physical therapist |
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| physiotherapy | (noun) therapy that uses physical agents: exercise and massage and other modalities | Synonyms: physiatrics, physical therapy |
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| physique | (noun) constitution of the human body | Synonyms: body-build, build, habitus |
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| (noun) alternative names for the body of a human being | Synonyms: anatomy, bod, build, chassis, figure, flesh, form, frame, human body, material body, physical body, shape, soma |
| physostegia | (noun) any of various plants of the genus Physostegia having sessile linear to oblong leaves and showy white or rose or lavender flowers | - |
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| physostigmine | (noun) used in treatment of Alzheimer's disease and glaucoma | - |
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| phytelephas | (noun) small genus of South American feather palms | Synonyms: genus Phytelephas |
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| phytochemical | (noun) a chemical substance obtained from plants that is biologically active but not nutritive | - |
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| phytochemist | (noun) a chemist who specializes in the chemistry of plants | - |
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| phytochemistry | (noun) the branch of organic chemistry dealing with the chemistry of plants | - |
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| phytohormone | (noun) (botany) a plant product that acts like a hormone | Synonyms: growth regulator, plant hormone |
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| phytologist | (noun) a biologist specializing in the study of plants | Synonyms: botanist, plant scientist |
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| phytology | (noun) the branch of biology that studies plants | Synonyms: botany |
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| phytonadione | (noun) a form of vitamin K, based on 2-methyl-1,4-naphthoquinone, with a 3-phytyl substituent | Synonyms: phylloquinone, vitamin K1 |
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| phytoplankton | (noun) photosynthetic or plant constituent of plankton; mainly unicellular algae | - |
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| phytotherapy | (noun) the use of plants or plant extracts for medicinal purposes (especially plants that are not part of the normal diet) | Synonyms: botanical medicine, herbal therapy |
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| phytotoxin | (noun) any substance produced by plants that is similar in its properties to extracellular bacterial toxin | Synonyms: plant toxin |
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| planography | (noun) the process of printing from a surface on which the printing areas are not raised but are ink-receptive (as opposed to ink repellent) | Synonyms: planographic printing |
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| plethysmograph | (noun) a measuring instrument for measuring changes in volume of a part or organ or whole body (usually resulting from fluctuations in the amount of blood it contains) | - |
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| polarography | (noun) an electrochemical method of chemical analysis | - |
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| polyethylene | (noun) a lightweight thermoplastic; used especially in packaging and insulation | Synonyms: polythene |
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| polytetrafluoroethylene | (noun) a material used to coat cooking utensils and in industrial applications where sticking is to be avoided | Synonyms: Teflon |
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| pornography | (noun) creative activity (writing or pictures or films etc.) of no literary or artistic value other than to stimulate sexual desire | Synonyms: erotica, porn, porno, smut |
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| porphyria | (noun) a genetic abnormality of metabolism causing abdominal pains and mental confusion | - |
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| porphyrin | (noun) any of various pigments distributed widely in living tissues | - |
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| porphyry | (noun) any igneous rock with crystals embedded in a finer groundmass of minerals | Synonyms: porphyritic rock |
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| prophylactic | (noun) contraceptive device consisting of a sheath of thin rubber or latex that is worn over the penis during intercourse | Synonyms: condom, rubber, safe, safety |
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| (noun) remedy that prevents or slows the course of an illness or disease | Synonyms: preventative, preventive |
| prophylaxis | (noun) the prevention of disease | - |
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| prophyll | (noun) a plant structure resembling a leaf | - |
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| propionaldehyde | (noun) a colorless liquid aldehyde | Synonyms: propanal |
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| psilophyte | (noun) any plant of the order Psilophytales: a savannah plant | - |
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| psilophyton | (noun) any plant or fossil of the genus Psilophyton | - |
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| psychomachy | (noun) a conflict of the soul (as with the body or between good and evil). | - |
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| psychopathy | (noun) any disease of the mind; the psychological state of someone who has emotional or behavioral problems serious enough to require psychiatric intervention | Synonyms: mental disease, mental illness |
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| psychophysicist | (noun) a psychologist trained in psychophysics | - |
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| psychophysics | (noun) the branch of psychology concerned with quantitative relations between physical stimuli and their psychological effects | - |
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| psychophysiology | (noun) the branch of psychology that is concerned with the physiological bases of psychological processes | Synonyms: neuropsychology, physiological psychology |
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| pteridophyte | (noun) plants having vascular tissue and reproducing by spores | Synonyms: nonflowering plant |
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| pyelography | (noun) roentgenography of the kidney and ureters (usually after injection with a radiopaque dye) | - |
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| pyrography | (noun) the act of producing drawings on wood or leather by using heated tools or a fine flame | - |
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| pyrophyllite | (noun) a white or greenish aluminum silicate mineral (resembles talc) | - |
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| radiography | (noun) photography that uses other kinds of radiation than visible light | - |
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| (noun) the process of making a radiograph; producing an image on a radiosensitive surface by radiation other than visible light | Synonyms: skiagraphy |
| radiophotography | (noun) transmission of photographs by radio waves | - |
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| radiotelegraphy | (noun) the use of radio to send telegraphic messages (usually by Morse code) | Synonyms: radiotelegraph, wireless telegraph, wireless telegraphy |
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| (noun) telegraphy that uses transmission by radio rather than by wire | Synonyms: radiotelegraph, wireless telegraphy |
| retinopathy | (noun) a disease of the retina that can result in loss of vision | - |
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| rhinopathy | (noun) any disease or malformation of the nose | - |
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| rhinophyma | (noun) enlargement of the nose with dilation of follicles and redness and prominent vascularity of the skin; often associated with excessive consumption of alcohol | Synonyms: brandy nose, copper nose, hammer nose, hypertrophic rosacea, potato nose, rum-blossom, rum nose, toper's nose |
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| rhyme | (noun) correspondence in the sounds of two or more lines (especially final sounds) | Synonyms: rime |
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| (noun) a piece of poetry | Synonyms: verse |
| rhymer | (noun) a writer who composes rhymes; a maker of poor verses (usually used as terms of contempt for minor or inferior poets) | Synonyms: poetiser, poetizer, rhymester, versifier |
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| rhymester | (noun) a writer who composes rhymes; a maker of poor verses (usually used as terms of contempt for minor or inferior poets) | Synonyms: poetiser, poetizer, rhymer, versifier |
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| rhyolite | (noun) very acid volcanic rock | - |
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| rhythm | (noun) natural family planning in which ovulation is assumed to occur 14 days before the onset of a period (the fertile period would be assumed to extend from day 10 through day 18 of her cycle) | Synonyms: calendar method, calendar method of birth control, rhythm method, rhythm method of birth control |
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| (noun) recurring at regular intervals | Synonyms: regular recurrence |
| (noun) (architecture) the repetitive use of a group of visual elements to establish a recognizable pattern | - |
| (noun) the arrangement of spoken words alternating stressed and unstressed elements | Synonyms: speech rhythm |
| (noun) the basic rhythmic unit in a piece of music | Synonyms: beat, musical rhythm |
| (noun) an interval during which a recurring sequence of events occurs | Synonyms: cycle, round |
| rhythmicity | (noun) the rhythmic property imparted by the accents and relative durations of notes in a piece of music | - |
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| rhytidectomy | (noun) plastic surgery to remove wrinkles and other signs of aging from your face; an incision is made near the hair line and skin is pulled back and excess tissue is excised | Synonyms: cosmetic surgery, face lift, face lifting, facelift, lift, nip and tuck, rhytidoplasty |
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| rhytidoplasty | (noun) plastic surgery to remove wrinkles and other signs of aging from your face; an incision is made near the hair line and skin is pulled back and excess tissue is excised | Synonyms: cosmetic surgery, face lift, face lifting, facelift, lift, nip and tuck, rhytidectomy |
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| roentgenography | (noun) radiography that uses X-rays to produce a roentgenogram | Synonyms: X-ray photography |
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| rophy | (noun) street names for flunitrazepam | Synonyms: circle, forget me drug, Mexican valium, R-2, roach, roofy, rope |
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| saprophyte | (noun) an organism that feeds on dead organic matter especially a fungus or bacterium | Synonyms: saprophytic organism |
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| schizothymia | (noun) resembling schizophrenia but remaining within the bounds of normality | - |
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| seismography | (noun) the measurement of tremors and shocks and undulatory movements of earthquakes | - |
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| semiepiphyte | (noun) a plant that is an epiphyte for part of its life | Synonyms: hemiepiphyte |
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| serigraphy | (noun) the act of making a print by the silkscreen method | - |
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| shy | (noun) a quick throw | - |
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| shylock | (noun) someone who lends money at excessive rates of interest | Synonyms: loan shark, moneylender, usurer |
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| shyness | (noun) a feeling of fear of embarrassment | - |
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| shyster | (noun) a person (especially a lawyer or politician) who uses unscrupulous or unethical methods | Synonyms: pettifogger |
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| skiagraphy | (noun) the process of making a radiograph; producing an image on a radiosensitive surface by radiation other than visible light | Synonyms: radiography |
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| smithy | (noun) a workplace where metal is worked by heating and hammering | Synonyms: forge |
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| smoothy | (noun) someone with an assured and ingratiating manner | Synonyms: charmer, smoothie, sweet talker |
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| sonography | (noun) using the reflections of high-frequency sound waves to construct an image of a body organ (a sonogram); commonly used to observe fetal growth or study bodily organs | Synonyms: echography, ultrasonography, ultrasound |
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| spathiphyllum | (noun) any of various plants of the genus Spathiphyllum having a white or green spathe and a spike of fragrant flowers and often cultivated as an ornamental | Synonyms: peace lily, spathe flower |
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| spermatophyte | (noun) plant that reproduces by means of seeds not spores | Synonyms: phanerogam, seed plant |
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| sphygmomanometer | (noun) a pressure gauge for measuring blood pressure | - |
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| sporophyl | (noun) leaf in ferns and mosses that bears the sporangia | Synonyms: sporophyll |
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| sporophyll | (noun) leaf in ferns and mosses that bears the sporangia | Synonyms: sporophyl |
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| sporophyte | (noun) the spore-producing individual or phase in the life cycle of a plant having alternation of generations | - |
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| squirearchy | (noun) the gentry who own land (considered as a class) | Synonyms: landed gentry |
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| stachyose | (noun) a tetrasaccharide found in the tubers of the Chinese artichoke | - |
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| staphylococci | (noun) spherical Gram-positive parasitic bacteria that tend to form irregular colonies; some cause boils or septicemia or infections | Synonyms: staph, staphylococcus |
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| staphylococcus | (noun) spherical Gram-positive parasitic bacteria that tend to form irregular colonies; some cause boils or septicemia or infections | Synonyms: staph, staphylococci |
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| steganography | (noun) act of writing in code or cipher | Synonyms: coding, cryptography, secret writing |
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| stenography | (noun) the act or art of writing in shorthand | - |
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| (noun) a method of writing rapidly using an abbreviated symbolic system | Synonyms: shorthand, tachygraphy |
| stereophotography | (noun) photography producing images that appear to have depth and solidness and that are created by using a special device (called a stereoscope) to look at two slightly different photographs of something at the same time. | Synonyms: stereo photography, stereoscopic photography |
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| stratigraphy | (noun) the branch of geology that studies the arrangement and succession of strata | - |
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| subphylum | (noun) (biology) a taxonomic group ranking between a phylum and a class | - |
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| superphylum | (noun) (biology) a taxonomic group ranking between a phylum and below a class or subclass | - |
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| symmachy | (noun) Fighting together or in an alliance with an ally (or allies) | - |
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| sympathy | (noun) an inclination to support or be loyal to or to agree with an opinion | Synonyms: understanding |
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| (noun) sharing the feelings of others (especially feelings of sorrow or anguish) | Synonyms: fellow feeling |
| (noun) a relation of affinity or harmony between people; whatever affects one correspondingly affects the other | - |
| symphysion | (noun) the most forward point of the alveolar process of the mandible | - |
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| symphysis | (noun) a growing together of parts or structures | - |
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| (noun) an abnormal adhesion of two or more structures | - |
| tachycardia | (noun) abnormally rapid heartbeat (over 100 beats per minute) | - |
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| tachygraphy | (noun) a method of writing rapidly using an abbreviated symbolic system | Synonyms: shorthand, stenography |
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| tachylite | (noun) a basic or basalt glass | - |
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