The Collaborative International Dictionary of English v.0.48:
Mobius strip \Mo"bi*us strip`\, Mobius strip \M["o]"bi*us
strip`\, Moebius strip \Moe"bi*us strip`\, n. [From August F.
M["o]bius, a German mathematician.]
A mathematical object, or a physical representation of it,
which is a two-dimensional sheet with only one surface. It is
constructed or visualized as a rectangle, one end of which is
held fixed while the opposite end is twisted through a 180
degree angle and joined to the fixed end. It is a
two-dimensional object that can only exist in a
three-dimensional space.
[PJC]
Note: The moebius strip was the subject of a famous woodcut
by M. Escher, published in 1963. See [a
href="images]mobius.jpg">Moebius Strip II.
[PJC]