| lipochondrodystrophy | (noun) hereditary disease (autosomal recessive) consisting of an error is mucopolysaccharide metabolism; characterized by severe abnormalities in development of skeletal cartilage and bone and mental retardation | Synonyms: dysostosis multiplex, gargoylism, Hurler's disease, Hurler's syndrome |
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| lithography | (noun) the act of making a lithographic print | - |
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| (noun) a method of planographic printing from a metal or stone surface | - |
| lithophyte | (noun) plant that grows on rocks or stony soil and derives nourishment from the atmosphere | Synonyms: lithophytic plant |
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| lymphangiography | (noun) roentgenographic examination of lymph nodes and lymph vessels after injection of a radiopaque contrast medium; produces a lymphangiogram | Synonyms: lymphography |
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| lymphography | (noun) roentgenographic examination of lymph nodes and lymph vessels after injection of a radiopaque contrast medium; produces a lymphangiogram | Synonyms: lymphangiography |
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| mammography | (noun) a diagnostic procedure to detect breast tumors by the use of X rays | - |
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| mammothermography | (noun) the use of thermography to detect breast tumors (which appear as hot spots) | - |
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| megagametophyte | (noun) the female gametophyte produced by the megaspore of a plant that produces both microspore and megaspores | - |
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| megasporophyll | (noun) in non-flowering plants, a sporophyll that bears only megasporangia | - |
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| mesomorphy | (noun) muscular and big-boned | Synonyms: athletic type |
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| mesophyron | (noun) a smooth prominence of the frontal bone between and above the eyebrows; the most forward projecting point of the forehead in the midline at the level of the supraorbital ridges | Synonyms: glabella |
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| mesophyte | (noun) land plant growing in surroundings having an average supply of water; compare xerophyte and hydrophyte | Synonyms: mesophytic plant |
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| metaphysics | (noun) the philosophical study of being and knowing | - |
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| metaphysis | (noun) the growing part of a long bone between the diaphysis and the epiphysis | - |
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| microgametophyte | (noun) the male gametophyte produced by a microspore | - |
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| microsporophyll | (noun) in non-flowering plants, a sporophyll that bears only microsporangia | - |
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| morphophysiology | (noun) the study of anatomy in its relation to function | Synonyms: functional anatomy, physiological anatomy |
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| murphy | (noun) an edible tuber native to South America; a staple food of Ireland | Synonyms: Irish potato, potato, spud, tater, white potato |
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| myelography | (noun) roentgenography of the spinal cord to detect possible lesions (usually after injection of a contrast medium into the subarachnoid space) | - |
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| myrmecophyte | (noun) plant that affords shelter or food to ants that live in symbiotic relations with it | - |
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| neophyte | (noun) any new participant in some activity | Synonyms: entrant, fledgeling, fledgling, freshman, newbie, newcomer, starter |
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| (noun) a new convert being taught the principles of Christianity by a catechist | Synonyms: catechumen |
| (noun) a plant that is found in an area where it had not been recorded previously | - |
| neurohypophysis | (noun) the posterior lobe of the pituitary body; primarily glandular in nature | Synonyms: pars nervosa, posterior pituitary, posterior pituitary gland |
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| neurophysiology | (noun) the branch of neuroscience that studies the physiology of the nervous system | - |
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| oceanography | (noun) the branch of science dealing with physical and biological aspects of the oceans | Synonyms: oceanology |
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| oleography | (noun) the art or process of producing chromolithographs printed on cloth to imitate an oil painting. | - |
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| orography | (noun) the science of mountains | Synonyms: orology |
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| orthography | (noun) a method of representing the sounds of a language by written or printed symbols | Synonyms: writing system |
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| osteodystrophy | (noun) defective bone development; usually attributable to renal disease or to disturbances in calcium and phosphorus metabolism | - |
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| osteophyte | (noun) small abnormal bony outgrowth | - |
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| palaeoethnography | (noun) the ethnography of paleolithic humans | Synonyms: paleoethnography |
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| palaeogeography | (noun) the study of the geography of ancient times or ancient epochs | Synonyms: paleogeography |
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| paleoethnography | (noun) the ethnography of paleolithic humans | Synonyms: palaeoethnography |
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| paleogeography | (noun) the study of the geography of ancient times or ancient epochs | Synonyms: palaeogeography |
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| paleography | (noun) the study of ancient forms of writing (and the deciphering of them) | - |
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| paraphysis | (noun) a sterile simple or branched filament or hair borne among sporangia; may be pointed or clubbed | - |
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| pataphysics | (noun) a philosophy or media theory dedicated to studying what lies beyond the realm of metaphysics. | - |
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| philosophy | (noun) the rational investigation of questions about existence and knowledge and ethics | - |
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| (noun) a belief (or system of beliefs) accepted as authoritative by some group or school | Synonyms: doctrine, ism, philosophical system, school of thought |
| (noun) any personal belief about how to live or how to deal with a situation | - |
| photography | (noun) the act of taking and printing photographs | Synonyms: picture taking |
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| (noun) the occupation of taking and printing photographs or making movies | - |
| (noun) the process of producing images of objects on photosensitive surfaces | - |
| photolithography | (noun) a planographic printing process using plates made from a photographic image | - |
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| phototelegraphy | (noun) an early technology for the transmission of facsimiles. | - |
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| phycobilin | (noun) water-soluble proteinaceous pigments found in red algae and cyanobacteria | - |
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| phycocyanin | (noun) blue pigment in algae | - |
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| phycoerythrin | (noun) red pigment in red algae | - |
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| phycology | (noun) the branch of botany that studies algae | Synonyms: algology |
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| phycomycosis | (noun) any fungal infection caused by fungi of the Phycomycetes group | - |
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| phylactery | (noun) (Judaism) either of two small leather cases containing texts from the Hebrew Scriptures (known collectively as tefillin); traditionally worn (on the forehead and the left arm) by Jewish men during morning prayer | Synonyms: tefillin |
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| phyle | (noun) a tribe of ancient Athenians | - |
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| phyllo | (noun) tissue thin sheets of pastry used especially in Greek dishes | - |
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| phylloclad | (noun) a flattened stem resembling and functioning as a leaf | Synonyms: cladode, cladophyll, phylloclade |
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| phylloclade | (noun) a flattened stem resembling and functioning as a leaf | Synonyms: cladode, cladophyll, phylloclad |
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| phyllode | (noun) an expanded petiole taking on the function of a leaf blade | - |
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| phylloquinone | (noun) a form of vitamin K, based on 2-methyl-1,4-naphthoquinone, with a 3-phytyl substituent | Synonyms: phytonadione, vitamin K1 |
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| phylogenesis | (noun) (biology) the sequence of events involved in the evolutionary development of a species or taxonomic group of organisms | Synonyms: evolution, organic evolution, phylogeny |
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| phylogeny | (noun) (biology) the sequence of events involved in the evolutionary development of a species or taxonomic group of organisms | Synonyms: evolution, organic evolution, phylogenesis |
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| phylum | (noun) (biology) the major taxonomic group of animals and plants; contains classes | - |
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| (noun) (linguistics) a large group of languages that are historically related | - |
| physa | (noun) any member of the genus Physa | - |
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| physiatrics | (noun) therapy that uses physical agents: exercise and massage and other modalities | Synonyms: physical therapy, physiotherapy |
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| physic | (noun) a purging medicine; stimulates evacuation of the bowels | Synonyms: aperient, cathartic, purgative |
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| physicalism | (noun) (philosophy) the philosophical theory that matter is the only reality | Synonyms: materialism |
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| physicality | (noun) preoccupation with satisfaction of physical drives and appetites | Synonyms: animalism |
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| 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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| polarography | (noun) an electrochemical method of chemical analysis | - |
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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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| 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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| 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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