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Total organic carbon
Total organic carbon (TOC) is the amount of carbon bound in organic molecules in a sample, measured by oxidizing organic carbon to carbon dioxide and detecting it.
Total pancreatectomy
Total pancreatectomy is an operation that removes all pancreatic tissue, performed mainly for pancreatic tumors and high-risk pancreases; first done successfully in 1942, it causes lifelong diabetes requiring insulin and enzyme replacement.
Total parotidectomy
Total parotidectomy is a head and neck surgical operation that removes the entire parotid gland, both superficial and deep portions, while identifying and preserving the facial nerve.
Total penumbral lunar eclipse
A total penumbral lunar eclipse is a lunar eclipse in which the Moon passes entirely through Earth's penumbra without entering the dark umbra, making it very faint.
Total phosphorus
Total phosphorus (TP) is a water-quality measurement of all phosphorus in a water sample regardless of chemical form, obtained by converting every phosphorus compound to orthophosphate before analysis.
Total physical response
Total Physical Response (TPR) is a language teaching method developed by James Asher in the 1960s in which learners respond physically to spoken commands; comprehension precedes production, and meta-analyses report positive effects on vocabulary learning.
Total productive maintenance
Total productive maintenance (TPM, Japanese: sōgōteki seisan hozan) is a manufacturing maintenance approach proposed by Japan's Institute of Plant Maintenance in 1971, aiming for zero defects, accidents, and breakdowns.
Total quality management
Total quality management (TQM) is a management approach that seeks long-term organizational success through customer satisfaction, engaging all employees in continual improvement of processes and products.
Total Recall (1990 film)
Total Recall is a 1990 American science fiction action film directed by Paul Verhoeven and starring Arnold Schwarzenegger as a construction worker with erased memories of Mars.
Total Recall (2012 film)
Total Recall is a 2012 American science fiction action film directed by Len Wiseman and starring Colin Farrell, Kate Beckinsale, and Jessica Biel, a remake of the 1990 film.
Total recordable incident rate
Total recordable incident rate (TRIR), or total recordable injury rate, is a workplace safety metric expressing OSHA-recordable injuries and illnesses per 200,000 hours worked, about 100 full-time employees a year.
Total reflection X-ray fluorescence
Total reflection X-ray fluorescence (TXRF) is an elemental analysis technique in which X-rays strike a sample on a polished carrier below the critical angle, enabling picogram trace-element detection.
Total Request Live
Total Request Live (TRL) was MTV's daily top-10 music video countdown, broadcast from a Times Square glass studio from September 14, 1998 to November 16, 2008, hosted by Carson Daly, later revived video-free in 2017.
Total return swap
A total return swap, or TRS, is a derivative in which one party receives an asset's total return, income plus price change, and pays a floating rate.
Total revenue
Total revenue is the entire income a seller receives from selling its output, computed as price times quantity, and the top line of an income statement.
Total scattering (diffraction)
Total scattering is a diffraction method analyzing the complete scattering pattern, Bragg peaks and diffuse scattering alike, to obtain the atomic pair distribution function, which reveals local structure.
Total Science
Total Science is a British drum and bass production duo from Oxford, England, formed by Jason Greenhalgh (Q Project) and Paul Smith (Spinback), who also run C.I.A. Records.
Total Soft Bank
Total Soft Bank (토탈소프트뱅크) is a South Korean software company in Busan, best known for the CATOS container terminal operating system used at over 100 terminals.
Total station
A total station, also called a total station theodolite, is an electronic surveying instrument that measures angles and distances to produce 3D coordinates from a single setup.
Total survey error
Total survey error is the composite of all errors that affect a survey estimate, quantified by the mean squared error and spanning sampling and nonsampling error.
Total suspended solids
Total suspended solids (TSS) is the mass of particles in water retained on a filter and dried to constant weight, a core wastewater and surface-water quality parameter reported in mg/L.
Total synthesis
Total synthesis is the laboratory construction of a complex natural product from simple, commercially available starting materials, planned by retrosynthetic analysis and executed as a multi-step sequence of reactions.
Total variation
Total variation is a numerical measure of how much a function, measure, or image oscillates, introduced by Camille Jordan to study pointwise convergence of Fourier series.
Total variation denoising
Total variation denoising is an image-restoration method that removes noise while preserving sharp edges, introduced by Rudin, Osher, and Fatemi in 1992 and widely used in imaging.
Total variation distance
The total variation distance is a metric on probability measures, defined as the largest discrepancy between the probabilities two distributions assign to any one event.
Total viable count
Total viable count (TVC), also called aerobic plate count, is a microbiological assay estimating living microorganisms in food, water, and pharmaceuticals as colony-forming units, a unit of microbial enumeration for at least 125 years.
Total war
Total war (German: Der totale Krieg) is warfare with unlimited aims, total mobilization of resources, and denial of non-combatant immunity; coined in WWI France by Léon Daudet, popularized by Ludendorff (1935), and proclaimed by Goebbels in 1943.
Total War (video game series)
Total War, also known as the Total War series, is a strategy game series by The Creative Assembly and Sega that combines turn-based campaigns with real-time battles.
Total War: Attila
Total War: Attila is a 2015 Creative Assembly strategy game for PC, set in 395 AD Late Antiquity on the Rome II engine, featuring Huns, horde migration, razing, climate mechanics, and 14 playable factions.
Total War: Medieval III
Total War: Medieval III (MEDIEVAL III) is Creative Assembly's upcoming medieval-era Total War, announced December 4, 2025 in pre-production on the new Warcore engine, with sieges confirmed, no release date, and possible console support.