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 Roger Joseph Zelazny (May 13, 1937 – June 14, 1995) was an American poet and writer of fantasy and science fiction short stories and novels, best known for '' The Chronicles of Amber''. He won the Nebula Award three times (out of 14 nom ...

* ''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 * ''Threshold'', a science-fiction novel by Ben Mezrich * Threshold Editions, a conservative imprint

Music

* Threshold (band), a UK progressive metal band * Threshold House, a record label created by Coil * Threshold Records, 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 Connie Smith (born Constance June Meador; August 14, 1941) is an American country music singer and songwriter. Her contralto vocals have been described by music writers as significant and influential to the women of country music. A similarity ...

'', 1965

Science

Biology

* Threshold (reference value) *

Absolute threshold In neuroscience and psychophysics, an absolute threshold was originally defined as the lowest level of a stimulus – light, sound, touch, etc. – that an organism could detect. Under the influence of signal detection theory, absolute threshol ...

* 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 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 exercisi ...

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 {{unreferenced, date=January 2015 Dark Adaptation Threshold (DAT) is a vision test that measures the adjustment of the eye occurring under low levels of illumination. When light enters the eye, it ultimately reaches the rods and cones, which are t ...

* Epidemic threshold * Flicker fusion threshold * Masking threshold * Odor detection threshold * Renal threshold * Seizure threshold * Sensory threshold * Threshold expression * 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 thre ...

* Percolation threshold * Polygyny threshold model * Threshold cryptosystem * Threshold displacement energy * Threshold energy * Threshold graph * Threshold knowledge *

* Threshold value * Threshold voltage * Thresholding (image processing) * 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 po ...

, a manufacturer of high end audio amplifiers * Displaced threshold, an aviation term * Election threshold, a concept in voting systems * Poverty thresholds (United States Census Bureau)