Reentrant or re-entrant can refer to:
Sciences
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Reentrancy (computing)
Reentrancy is a programming concept where a function or subroutine can be interrupted and then resumed before it finishes executing. This means that the function can be called again before it completes its previous execution. Reentrant code is de ...
in computer programming
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Reentrant mutex
In computer science, the reentrant mutex (recursive mutex, recursive lock) is a particular type of mutual exclusion (mutex) device that may be locked multiple times by the same process/thread, without causing a deadlock.
While any attempt to per ...
in computer science
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Reentry (neural circuitry)
Reentry is a Biological neural network, neural structuring of the brain, which is characterized by the ongoing bidirectional exchange of signals along reciprocal axonal fibers linking two or more brain areas. It is hypothesized to allow for widely ...
in neuroscience
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Concave polygon
A simple polygon that is not convex is called concave, non-convex or reentrant. A concave polygon will always have at least one reflex interior angle—that is, an angle with a measure that is between 180° degrees and 360° degrees exclusive.
...
, AKA reentrant polygon
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Reentry
Atmospheric entry (sometimes listed as Vimpact or Ventry) is the movement of an object from outer space into and through the gases of an atmosphere of a planet, dwarf planet, or natural satellite. Atmospheric entry may be ''uncontrolled entr ...
into the atmosphere of an orbiting body
Topography
*Re-entrant, a type of terrain feature commonly known as a
draw
Draw, drawing, draws, or drawn most commonly refer to:
* Draw (terrain), a terrain feature formed by two parallel ridges or spurs with low ground in between them
* Draw (tie), in a competition, where competitors achieve equal outcomes
* Draw ...
.
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Salients, re-entrants and pockets
A salient, also known as a bulge, is a battlefield feature that projects into enemy territory. The salient is surrounded by the enemy on multiple sides, making the troops occupying the salient vulnerable. The opponent's front line that borders a ...
in military tactics
See also
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Reentrant dysrhythmia
Arrhythmias, also known as cardiac arrhythmias, are irregularities in the heartbeat, including when it is too fast or too slow. Essentially, this is anything but normal sinus rhythm. A resting heart rate that is too fast – above 100 beats ...
, a type of cardiac arrhythmia
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Reentrant tuning
On a stringed instrument, a break in an otherwise ascending (or descending) order of string pitches is known as a re-entry. A re-entrant tuning, therefore, is a tuning which does not order all the strings (or more properly the courses) from the ...
in music
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