Definitions
from The American Heritage® Dictionary of the English Language, 4th Edition
 adj. Mathematics Unbounded in one direction or dimension.
from The Century Dictionary and Cyclopedia
 Limited at one end and extending to infinity away from it.
 Bounded by an infinite plane: said of a medium whose only boundary is a plane surface.
Etymologies
Sorry, no etymologies found.
Examples

Ellison has been at the center of a semiinfinite run of petty dramas since I personally was old enough to read.
MIND MELD: What are the Most Controversial SF/F Novels of the Past & Present?

All your reasons in favor of immortality presuppose semiinfinite resources as well as equal access to them, capability to expand into space, and a totally flat social organization with direct representation.
Jason Stoddard, Strange and Happy » Blog Archive » Four Arguments FOR Immortality

Basically the problem is the semiinfinite onedimensional heat equation with source at x=0 (the surface), but that boundary condition depends on a relationship between dT/dx and T at x = 0 (I think this qualifies as mixed boundary conditions  not Dirichlet or Neumann anyway).

There are many ways to reduce or alleviate such inherent arithmetical errors, including the most obvious: fixed point semiinfinite precision arithmetic.

She seemed to be semiinfinite as her often melodious speaking voice was unimaginable in one direction and limited in another.

The World Wide Web is the multimedia version of the Internet, where you can get not only text but also pictures and sounds on a semiinfinite range of topics, stored on "" Web pages, '' maintained by companies, institutions, and individuals.

From these sources it can be estimated that on a windless or near windless days for a semiinfinite slab that the Tmax increase would be expected to approach 1F for a Temp sensor bounded by a road.

Disjoint semiinfinite lines perhaps In those early papers, the largest problem in CI computation seems to be the possibility of , proxy = zero * temperature + noise in this context.

No, your response is just another of a semiinfinite number of examples of PT logic that goes like this:
Area clergy make room for evolution with the divine  The Panda's Thumb

An exceptionally fruitful concept for the mathematical modeling of hydrological processes is the socalled semiinfinite storage reservoir, especially the type with a fixed bottom and no fixed maximum Klemeš, 1970, 1971, 1973.
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