Threshold may refer to:

Architecture

* Threshold (door), the sill of a door

Media

* ''Threshold'' (1981 film) * ''Threshold'' (TV series), an American science fiction drama series produced during 2005-2006 * "Threshold" (''Stargate SG-1''), an episode of the TV series * "Threshold" (''Star Trek: Voyager''), an episode of the TV series * Threshold Entertainment, a Hollywood Intellectual Property Management and Production Company *

Threshold Podcast ''Threshold'' is a Peabody Award-winning podcast and radio show that tackles one pressing environmental story each season. The podcast explores the intersections of environment, history, culture, science, politics and social justice, focusing on t ...

, a podcast focused on long-form reporting of climate justice topics

Literature

* ''Threshold'' (1990 novel), a science fiction novel by Chris and Janet Morris * ''Threshold'' (Sara Douglass novel), a fantasy novel * ''Threshold'' (Palmer novel), a science fiction novel by David R. Palmer * ''Threshold'', the first volume of the collected short fiction of Roger Zelazny * ''Threshold'' (DC Comics), a comic book published by DC Comics * Threshold (''Doctor Who''), an organization in ''Doctor Who'' comic strips * ''Threshold'', a science-fiction novel by Caitlín R. Kiernan * ''Threshold'', a Christian novel by

Bill Myers Bill Myers is an American Christian author, film director and film producer. He was born in Seattle, Washington on September 9, 1953. Myers is most notable for the animated series ''McGee and Me!'' He is an author of books from many genres, ...

* ''Threshold'', a science-fiction novel by

Ben Mezrich Ben Mezrich ( ; born February 7, 1969) is an American author. Early life and education Mezrich was born in Boston, Massachusetts, the son of Molli Newman, a lawyer, and Reuben Mezrich, a chairman of radiology at the University of Maryland Scho ...

* Threshold Editions, a conservative imprint

Music

* Threshold (band), a UK progressive metal band * Threshold House, a record label created by Coil *

Threshold Records Threshold Records was a record label created by the rock music group the Moody Blues. The name of the label came from their 1969 album ''On the Threshold of a Dream''. The band formed this label to allow for artistically packaged gatefold covers ...

, a record label created by The Moody Blues

Albums

* ''Threshold'' (album), a 2006 album by HammerFall * ''Thresholds'' (album), a 1992 album by Nocturnus * ''Threshold'', a 1997 album by Erik Norlander

Songs

* "Threshold", by Pocahaunted, 2010 * "Threshold", by Slayer on the album '' God Hates Us All'', 2001 * "Threshold", by The Steve Miller Band from ''

Book of Dreams ''Book of Dreams'' is the tenth studio album by Steve Miller Band. The album was released in May 1977 on Capitol Records in the United States, Canada and Japan and by Mercury Records in Europe. Three singles were released from the album in 1977 w ...

'', 1977 * "Threshold", by Turnover from '' Peripheral Vision'', 2015 * "Threshold," from the '' Scott Pilgrim vs. the World soundtrack'', 2010 * "The Threshold", by Connie Smith from '' Connie Smith'', 1965

Science

Biology

* Threshold (reference value) * Absolute threshold * Absolute threshold of hearing *

Action potential An action potential occurs when the membrane potential of a specific cell location rapidly rises and falls. This depolarization then causes adjacent locations to similarly depolarize. Action potentials occur in several types of animal cells ...

* Aerobic threshold *

Anaerobic threshold Lactate inflection point (LIP), is the exercise intensity at which the blood concentration of lactate and/or lactic acid begins to increase rapidly. It is often expressed as 85% of maximum heart rate or 75% of maximum oxygen intake. When exercisin ...

* Dark adaptation threshold * Epidemic threshold * Flicker fusion threshold * Masking threshold * Odor detection threshold * Renal threshold *

Seizure threshold The term seizure threshold is used to describe the balance between excitatory (glutaminergic) and inhibitory ( GABA-ergic) forces in the brain which affect how susceptible a person is to seizures. Those diagnosed with epilepsy or certain other neur ...

Sensory threshold In psychophysics, sensory threshold is the weakest stimulus that an organism can sense. Unless otherwise indicated, it is usually defined as the weakest stimulus that can be detected half the time, for example, as indicated by a point on a proba ...

Threshold expression Mitochondrial threshold effect is a phenomenon where the number of mutated mtDNA has surpassed a certain threshold which causes the electron transport chain and ATP synthesis of a mitochondrion to fail. There isn't a set number that needs to be sur ...

* Threshold limit value *

Threshold model In mathematical or statistical modeling a threshold model is any model where a threshold value, or set of threshold values, is used to distinguish ranges of values where the behaviour predicted by the model varies in some important way. A particula ...

* Threshold of pain * Threshold potential

Other science-related

* Ecological threshold * Error threshold (evolution) * Extinction threshold *

Lasing threshold The lasing threshold is the lowest excitation level at which a laser's output is dominated by stimulated emission rather than by spontaneous emission. Below the threshold, the laser's output power rises slowly with increasing excitation. Above thr ...

* Percolation threshold * Polygyny threshold model *

Threshold cryptosystem A threshold cryptosystem, the basis for the field of threshold cryptography, is a cryptosystem that protects information by encrypting it and distributing it among a cluster of fault-tolerant computers. The message is encrypted using a public key, ...

* Threshold displacement energy * Threshold energy *

Threshold graph In graph theory, a threshold graph is a graph that can be constructed from a one-vertex graph by repeated applications of the following two operations: # Addition of a single isolated vertex to the graph. # Addition of a single dominating vertex t ...

Threshold knowledge Threshold knowledge is a term in the study of higher education used to describe core concepts—or threshold concepts—which, once understood, transform perception of a given subject, phenomenon, or experience.Meyer J H F and Land R 2003 "Threshol ...

* Threshold value * Threshold voltage *

Thresholding (image processing) In digital image processing, thresholding is the simplest method of segmenting images. From a grayscale image, thresholding can be used to create binary images. Definition The simplest thresholding methods replace each pixel in an image with ...

* Transparency threshold

Other meanings

* ''Threshold'' (video game), a 1981 video game *

Threshold Audio Threshold Audio is a high-end audio equipment manufacturer originally established in California in 1974 by audio engineer Nelson Pass and graphic designer René Besne. The company, today based in Houston Texas, manufactures mono-block and stereo ...

, a manufacturer of high end audio amplifiers *

Displaced threshold A displaced threshold or DTHR is a runway threshold located at a point other than the physical beginning or end of the runway. The portion of the runway behind a displaced threshold may be used for takeoff in either direction and landings from t ...

, an aviation term * Election threshold, a concept in voting systems * Poverty thresholds (United States Census Bureau)