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New Latin, from Greek, act or condition of standing, stopping, from histasthai to stand

For lessons on the topic of Stasis, follow this link.


  • 1 : a slowing or stoppage of the normal flow of a bodily fluid or semifluid: as
a : slowing of the current of circulating blood
b : reduced motility of the intestines with retention of feces
b : a state or period of stability during which little or no evolutionary change in a lineage occurs


The term stasis (from Greek στάσις "a standing still") may refer to a state of stability, in which all forces are equal and opposing, therefore they cancel out each other.


Stasis (pronounced /ˈsteɪsɪs/), or hypersleep, is a science fiction concept akin to suspended animation. Whereas suspended animation usually refers to a greatly reduced state of life processes, stasis implies a complete cessation of these processes, which can be easily restarted or restart spontaneously when stasis is removed. Depending on the work of fiction in which it is depicted, stasis has particular properties useful to science fiction story lines.

A stasis field is a region where a stasis process is in effect. Stasis fields in fictional settings often have several common characteristics. These include infinite or near-infinite rigidity, making them "unbreakable objects", and a perfect or nearly-perfect reflective surface. Most science fiction plots rely on a physical device to establish this region. When the device is deactivated, the stasis field collapses; that is, the stasis effect ends.

Time is often suspended in stasis fields. Such fields will thus have the additional property of protecting non-living materials from deterioration. This time dilation can be, from an in-universe perspective, absolute, so that something thrown into the field, has the field triggered, and after any length of time reactivated, would fly out as if nothing had happened. Storylines using such fields often have materials as well as living beings surviving thousands or millions of years beyond their normal lifetimes. This property also allows for such plot devices as booby traps, containing, for instance, a nuclear bomb. Once out of the stasis field the trap is sprung. In such a situation, it wouldn't do to let the protagonist see what is in the field, so in stories like this, the story line will not allow normal beings to see something protected by a stasis field.

The primary use of stasis fields is essentially the same as suspended animation: to let passengers and cargoes (normally of spacecraft) avoid having to experience extremely long periods of time by "skipping over" large sections of it. They may also be used (such as in tTe Night's Dawn Trilogy) as protection against the effects of extreme acceleration.

There are real phenomena that cause time dilation similar to a stasis field's. Velocity near light speed or a powerful gravitational field will cause time to progress more slowly. However, there is no known theoretical way to cause such time dilation independent of these conditions.