nonorientable en · ADJ
Etymology
Etymology tree English non- English orient Proto-Indo-European *-dʰlom Proto-Italic *-ðlom Proto-Italic *-ðlis Latin -bilis Latin -ābilis Old French -ablebor. Middle English -able English -able English orientable English nonorientable From non- + orientable.
Meanings
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(not-comparable) Not able to be oriented.
Through every point of a nonorientable surface there passes a Möbius-like nonorientable strip (with an odd number of half-twists) which is part of that surface.
The Möbius strip is a nonorientable surface.