| lexicostatistics | (noun) a statistical technique used in glottochronology; used to estimate how long ago different languages evolved from a common source language | - |
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| linguistics | (noun) the scientific study of language | - |
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| (noun) the humanistic study of language and literature | Synonyms: philology |
| lithoglyptics | (noun) the art of engraving on precious stones | Synonyms: glyptics |
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| liturgics | (noun) the study of liturgies | Synonyms: liturgiology |
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| logistics | (noun) handling an operation that involves providing labor and materials be supplied as needed | - |
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| macrobiotics | (noun) the theory of promoting health and longevity by means of diet (especially whole beans and grains) | - |
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| macroeconomics | (noun) the branch of economics that studies the overall working of a national economy | - |
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| magnetics | (noun) the branch of science that studies magnetism | Synonyms: magnetism |
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| magnetohydrodynamics | (noun) the study of the interaction of magnetic fields and electrically conducting fluids (as plasma or molten metal) | - |
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| mathematics | (noun) a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement | Synonyms: math, maths |
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| mechanics | (noun) the technical aspects of doing something | Synonyms: mechanism |
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| (noun) the branch of physics concerned with the motion of bodies in a frame of reference | - |
| memetics | (noun) a theory of mental content based on an analogy with Darwinian evolution. | - |
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| metamathematics | (noun) the logical analysis of mathematical reasoning | - |
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| metaphysics | (noun) the philosophical study of being and knowing | - |
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| metrics | (noun) the study of poetic meter and the art of versification | Synonyms: prosody |
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| microeconomics | (noun) the branch of economics that studies the economy of consumers or households or individual firms | - |
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| microelectronics | (noun) the branch of electronics that deals with miniature components | - |
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| mnemonics | (noun) a method or system for improving the memory | - |
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| morphophonemics | (noun) the study of the phonological realization of the allomorphs of the morphemes of a language | - |
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| neuroethics | (noun) the study of ethical implications of treatments for neurological diseases | - |
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| neurolinguistics | (noun) the branch of linguistics that studies the relation between language and the structure and function of the nervous system | - |
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| nucleonics | (noun) the branch of physics that studies the internal structure of atomic nuclei | Synonyms: atomic physics, nuclear physics |
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| numismatics | (noun) the collection and study of money (and coins in particular) | Synonyms: coin collecting, coin collection, numismatology |
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| obstetrics | (noun) the branch of medicine dealing with childbirth and care of the mother | Synonyms: midwifery, OB, tocology |
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| onomastics | (noun) the branch of lexicology that studies the forms and origins of proper names | - |
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| optics | (noun) optical properties | - |
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| (noun) the branch of physics that studies the physical properties of light | - |
| orthodontics | (noun) the branch of dentistry dealing with the prevention or correction of irregularities of the teeth | Synonyms: dental orthopaedics, dental orthopedics, orthodontia, orthodonture |
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| orthopaedics | (noun) the branch of medical science concerned with disorders or deformities of the spine and joints | Synonyms: orthopedics |
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| orthopedics | (noun) the branch of medical science concerned with disorders or deformities of the spine and joints | Synonyms: orthopaedics |
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| orthoptics | (noun) treatment of defects of binocular vision (such as strabismus and amblyopia) by nonsurgical measures (especially by exercises to strengthen the eye muscles) | - |
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| paediatrics | (noun) the branch of medicine concerned with the treatment of infants and children | Synonyms: pediatric medicine, pediatrics, pedology |
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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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| patristics | (noun) the study of the lives, writings, and doctrines of the Church Fathers | Synonyms: patrology |
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| (noun) the writings of the early Church Fathers | Synonyms: patrology |
| pecs | (noun) either of two large muscles of the chest | Synonyms: musculus pectoralis, pectoral, pectoral muscle, pectoralis |
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| pedagogics | (noun) the principles and methods of instruction | Synonyms: pedagogy, teaching method |
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| pediatrics | (noun) the branch of medicine concerned with the treatment of infants and children | Synonyms: paediatrics, pediatric medicine, pedology |
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| periodontics | (noun) the branch of dentistry dealing with diseases of the gums and other structures around the teeth | Synonyms: periodontia |
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| pharmaceutics | (noun) the art and science of preparing and dispensing drugs and medicines | Synonyms: pharmacy |
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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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| phonemics | (noun) the study of the sound system of a given language and the analysis and classification of its phonemes | Synonyms: phonology |
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| phonetics | (noun) the branch of acoustics concerned with speech processes including its production and perception and acoustic analysis | - |
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| phonics | (noun) teaching reading by training beginners to associate letters with their sound values | - |
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| photomechanics | (noun) the technique of using photomechanical methods to make photographs into plates for printing | - |
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| (noun) the process whereby printing surfaces (plates or cylinders) are produced by photographic methods | Synonyms: photoplate making |
| physiatrics | (noun) therapy that uses physical agents: exercise and massage and other modalities | Synonyms: physical therapy, physiotherapy |
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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 |
| pneumatics | (noun) the branch of mechanics that deals with the mechanical properties of gases | - |
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| poetics | (noun) study of poetic works | - |
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| polemics | (noun) the branch of Christian theology devoted to the refutation of errors | - |
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| politics | (noun) the profession devoted to governing and to political affairs | - |
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| (noun) the activities and affairs involved in managing a state or a government | - |
| (noun) the study of government of states and other political units | Synonyms: government, political science |
| (noun) the opinion you hold with respect to political questions | Synonyms: political sympathies |
| (noun) social relations involving intrigue to gain authority or power | Synonyms: political relation |
| pragmatics | (noun) the study of language use | - |
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| problematics | (noun) the uncertainties or difficulties inherent in a situation or plan. | - |
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| propaedeutics | (noun) a course that provides an introduction to an art or science (or to more advanced study generally) | Synonyms: propaedeutic |
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| prosthetics | (noun) the branch of medicine dealing with the production and use of artificial body parts | - |
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| prosthodontics | (noun) the branch of dentistry dealing with the replacement of teeth and related mouth or jaw structures by artificial devices | Synonyms: prosthodontia |
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| proteomics | (noun) the branch of genetics that studies the full set of proteins encoded by a genome | - |
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| proxemics | (noun) the study of spatial distances between individuals in different cultures and situations | - |
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| psychodynamics | (noun) the branch of social psychology that deals with the processes and emotions that determine psychology and motivation | - |
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| (noun) the interrelation of conscious and unconscious processes and emotions that determine personality and motivation | - |
| psychographics | (noun) market research or statistics classifying population groups according to psychological variables (as attitudes, values, or fears); also: variables or trends identified through such research. | - |
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| psycholinguistics | (noun) the branch of cognitive psychology that studies the psychological basis of linguistic competence and performance | - |
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| psychometrics | (noun) any branch of psychology concerned with psychological measurements | Synonyms: psychometrika, psychometry |
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| psychonomics | (noun) the branch of psychology that uses experimental methods to study psychological issues | Synonyms: experimental psychology |
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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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| psychotherapeutics | (noun) the branch of psychiatry concerned with psychological methods | Synonyms: mental hygiene, psychotherapy |
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| pyrotechnics | (noun) the craft of making fireworks | Synonyms: pyrotechny |
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| (noun) (music) brilliance of display (as in the performance of music) | - |
| quadratics | (noun) a branch of algebra dealing with quadratic equations | - |
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| robotics | (noun) the area of AI concerned with the practical use of robots | - |
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| semantics | (noun) the study of language meaning | - |
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| (noun) the meaning of a word, phrase, sentence, or text | - |
| semiotics | (noun) (philosophy) a philosophical theory of the functions of signs and symbols | Synonyms: semiology |
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| semitropics | (noun) regions adjacent to the tropics | Synonyms: subtropics |
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| sociolinguistics | (noun) the study of language in relation to its sociocultural context | - |
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| specs | (noun) (plural) optical instrument consisting of a frame that holds a pair of lenses for correcting defective vision | Synonyms: eyeglasses, glasses, spectacles |
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| statics | (noun) the branch of mechanics concerned with forces in equilibrium | - |
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| statistics | (noun) a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters | - |
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| stemmatics | (noun) the humanistic discipline that attempts to reconstruct the transmission of a text (especially a text in manuscript form) on the basis of relations between the various surviving manuscripts (sometimes using cladistic analysis) | Synonyms: stemmatology |
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| strategics | (noun) the science or art of strategy | - |
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| subtropics | (noun) regions adjacent to the tropics | Synonyms: semitropics |
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| systematics | (noun) the science of systematic classification | - |
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| tactics | (noun) a plan for attaining a particular goal | Synonyms: maneuver, manoeuvre, tactic |
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| (noun) the branch of military science dealing with detailed maneuvers to achieve objectives set by strategy | - |
| tectonics | (noun) the branch of geology studying the folding and faulting of the earth's crust | Synonyms: plate tectonic theory, plate tectonics |
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| (noun) the science of architecture | Synonyms: architectonics |
| telerobotics | (noun) the area of robotics that is concerned with the control of robots from a distance | - |
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| therapeutics | (noun) branch of medicine concerned with the treatment of disease | - |
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| thermionics | (noun) the branch of electronics dealing with thermionic phenomena (especially thermionic vacuum tubes) | - |
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| thermodynamics | (noun) the branch of physics concerned with the conversion of different forms of energy | - |
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| thermostatics | (noun) the aspect of thermodynamics concerned with thermal equilibrium | Synonyms: thermodynamics of equilibrium |
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| tropics | (noun) the part of the Earth's surface between the Tropic of Cancer and the Tropic of Capricorn; characterized by a hot climate | Synonyms: Torrid Zone, tropical zone |
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