All articles starting with M
36,687 articles
Mean corpuscular volume
Mean corpuscular volume (MCV), or mean cell volume, is a CBC red cell index measuring average red blood cell size in femtoliters; normal adult range about 80-100 fL, classifying anemia as microcytic, normocytic, or macrocytic.
Mean Creek
Mean Creek is a 2004 American independent drama, the feature debut of writer-director Jacob Aaron Estes, about Oregon teens whose boat-trip prank on a bully (Josh Peck) goes fatally wrong; it won the Humanitas Prize and the Independent Spirit John Cassavetes Award.
Mean curvature
Mean curvature is the average of the two principal curvatures of a surface at a point, one of the two standard curvature quantities in classical surface theory.
Mean curvature flow
Mean curvature flow is a geometric evolution process in which every point of a surface moves in the normal direction at a speed equal to the local mean curvature.
Mean effective pressure
Mean effective pressure (MEP) is a theoretical engine parameter defined as the work produced in one engine cycle divided by displacement volume, allowing comparison of differently sized engines.
Mean field theory
Mean field theory is a physics method that replaces each particle's fluctuating interactions with their thermal average, widely used for magnetism, phase transitions, and spin glasses.
Mean filter
The mean filter is a linear spatial filter that replaces each pixel with the average of its neighborhood, reducing noise and smoothing images while blurring edges.
Mean first passage time
The mean first passage time, also called the mean hitting time, is the expected number of steps a Markov chain takes to reach a given state from another specified state.
Mean free path
The mean free path is the average distance a gas molecule travels between successive collisions, or a photon before absorption or scattering, central to kinetic theory.
Mean Girls
Mean Girls is a 2004 American teen comedy directed by Mark Waters and written by Tina Fey, in which homeschooled Cady Heron joins a high school clique.
Mean Girls (2004 soundtrack)
Mean Girls: Music from the Motion Picture (2004) is the licensed pop-rock soundtrack album to Tina Fey's Mean Girls film, released September 21, 2004 on Bulletproof, 49:17 long, featuring Kelis' Milkshake, The Donnas, and Pink; distinct from the 2024 musical film soundtrack.
Mean Girls (2024 film)
Mean Girls is a 2024 American musical comedy film directed by Samantha Jayne and Arturo Perez Jr., adapting the Broadway musical based on Tina Fey's 2004 film.
Mean Girls (musical)
Mean Girls is a 2018 Broadway musical with book by Tina Fey, music by Jeff Richmond, lyrics by Nell Benjamin, based on the 2004 film; 12 Tony nominations, 804 performances, national tours, and a 2024 film adaptation.
Mean Girls 2
Mean Girls 2 (2011) is an ABC Family television sequel to Mean Girls, directed by Melanie Mayron, starring Meaghan Martin, Maiara Walsh, and Tim Meadows, produced by Paramount Famous Productions and poorly reviewed.
Mean high water
Mean high water is a tidal datum, the average of all high water heights observed over the 19-year National Tidal Datum Epoch used by NOAA.
Mean higher high water
Mean higher high water (MHHW) is a tidal datum averaging the higher of each day's two high tides over a 19-year National Tidal Datum Epoch, used as the reference for coastal flooding.
Mean imputation
Mean imputation is a statistical method for handling missing data that replaces each missing value with the mean of that variable's observed values, keeping incomplete records in an analysis.
Mean low water
Mean low water is a tidal datum, the average of all low water heights observed over a 19-year period, used as a reference for charting and coastal legal boundaries.
Mean lower low water
Mean lower low water (MLLW) is the tidal datum, averaged over 19 years, that serves as the chart datum for depths on U.S. coastal nautical charts.
Mean Machine (film)
Mean Machine (2001) is a British prison sports comedy directed by Barry Skolnick, starring Vinnie Jones as jailed ex-England captain Danny Meehan; a soccer remake of The Longest Yard produced by Matthew Vaughn's SKA Films.
Mean opinion score
The mean opinion score (MOS) is the average rating a panel of human judges gives to speech, audio, or video quality on a scale from 1 (bad) to 5 (excellent).
Mean platelet volume
Mean platelet volume (MPV) is the average platelet size in femtoliters from a routine blood count; healthy range 7.7–11.2 fL, inversely related to platelet count, sensitive to anticoagulant and analyzer, studied as a cardiovascular biomarker.
Mean reciprocal rank
Mean reciprocal rank (MRR) is an evaluation metric for ranked retrieval that averages, over a query set, the reciprocal of the rank of the first relevant result.
Mean shift
Mean shift is a nonparametric clustering algorithm that iteratively moves data points toward the mean of their neighborhood, settling at density modes that serve as cluster centers.
Mean spherical approximation
The mean spherical approximation (MSA) is a linearized closure of the Ornstein–Zernike equations that keeps the hard-core exclusion exact, with analytic solutions for electrolytes, Yukawa fluids, and polar liquids.
Mean Spirit
Mean Spirit is a 1990 historical novel by Chickasaw writer Linda Hogan, her first, fictionalizing the murders of oil-wealthy Osage people in Oklahoma in the early 1920s.
Mean squared error
Mean squared error (MSE), also called mean squared deviation, is the expected squared difference between an estimator or prediction and the true value, decomposing into variance plus squared bias.
Mean Streets
Mean Streets (1973) is Martin Scorsese's semi-autobiographical crime drama set in New York's Little Italy, starring Harvey Keitel and Robert De Niro; originally titled Season of the Witch, it premiered at the 1973 New York Film Festival and made Scorsese's reputation.
Mean Time
Mean Time is a 1993 poetry collection, Duffy's fourth, by the Scottish poet Carol Ann Duffy. It won the Whitbread Poetry Award and the Forward Poetry Prize.
Mean time between failures
Mean time between failures (MTBF), also called mean time before failure, is a reliability metric: the expected time between successive failures of a repairable item that can be restored to service.