Halfspace

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
Either of the two parts of a three-dimensional object cut by a two-dimensional plane
2
A simple mathematical model of the structure of the Earth, as used in seismology.

Etymology

From half + space.

Related phrases

mathematical model three dimensional

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.