semistationary

semi- +‎ stationary

semistationary (not comparable)

1. Allowing only a limited range of movement.
   • 1998, Richard E. Gertsch & ‎Richard Lee Bullock, Techniques in Underground Mining, →ISBN:

     Where semistationary shovels do the loading, some sort of vehicle must haul the rock either to the next part of the materials-handling system, located near the stoping area, or all the way to the shaft.

2. Staying on one place or form, although capable of change on occasion.
   • 2012, Pentti Hakkila, Utilization of Residual Forest Biomass, →ISBN, page 297:

     In the United States, the process of dismembering a tree or stem at a stationary or semistationary conversion yard to obtain a maximum product value is termed merchandizing, and the system of machines used for this purpose is called a tree or stem merchandizer.

   • 2012, Clark Viehweg, The Dragon Fly, →ISBN:

     They now have several satellites located in semistationary orbits at strategic locations around the world instead of one satellite circulating the globe.

3. (mathematics) Having the same properties over time, although possibly showing different behavior in stability intervals.
   • 2016, Fred Espen Benth, Heidar Eyjolfsson, “Simulation of volatility modulated Volterra processes using hyperbolic stochastic partial differential equations”, in Bernoulli‎, volume Vol. 22, pages 774-793:

     These solutions can in turn estimate so called volatility modulated Volterra (VMV) processes and L\'{e}vy semistationary (LSS) processes, which is a class of processes that have been employed to model turbulence, tumor growth and electricity forward and spot prices.