Definition of semi-infinite in English:

semi-infinite

adjective

Mathematics
  • (of a line or solid) limited in one direction and stretching to infinity in the other.

    • ‘This is in agreement with results from an elastic model of magnetic twisting cytometry for which bead movement increased when the 5-m-high monolayer was replaced by a semi-infinite space (infinite height).’
    • ‘A similar analysis considered that both pools experience either diffusion- or reaction-limited behavior, and the time-dependent diffusive flux to a single absorber in a semi-infinite membrane was used.’
    • ‘Consistent with continuum PB theory, the membrane is represented approximately as a semi-infinite planar low-dielectric slab.’
    • ‘This paper Crighton studied the sound wave associated with a turbulent fluid flow over a discontinuous surface formed by two semi-infinite flexible planes.’

Pronunciation:

semi-infinite

/sɛmɪˈɪnfɪnɪt/