Retraction or retract(ed) may refer to:
Academia
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Retraction in academic publishing
In academic publishing, a retraction is the action by which a published paper in an academic journal is removed from the journal.
Procedure
A retraction may be initiated by the editors of a journal, or by the author(s) of the papers (or thei ...
, withdrawals of previously published academic journal articles
Mathematics
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Retraction (category theory)
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Retract (group theory)
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Retraction (topology)
In topology, a branch of mathematics, a retraction is a continuous mapping from a topological space into a subspace that preserves the position of all points in that subspace. The subspace is then called a retract of the original space. A deformat ...
Human physiology
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Retracted (phonetics)
In phonetics and phonology, relative articulation is description of the manner and place of articulation of a speech sound relative to some reference point. Typically, the comparison is made with a default, unmarked articulation of the same pho ...
, a sound pronounced to the back of the vocal tract, in linguistics
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Retracted tongue root
In phonetics, advanced tongue root (ATR) and retracted tongue root (RTR) are contrasting states of the root of the tongue during the pronunciation of vowels in some languages, especially in Western and Eastern Africa, but also in Kazakh and Mong ...
, a position of the tongue during the pronunciation of a vowel, in phonetics
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Sternal retraction, a symptom of respiratory distress in humans
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Retraction (kinesiology)
Motion, the process of movement, is described using specific anatomical terms. Motion includes movement of organs, joints, limbs, and specific sections of the body. The terminology used describes this motion according to its direction relativ ...
, an anatomical term of motion
See also
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Retractor (disambiguation)
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