A lentoid is a geometric shape of a three-dimensional body, best described as a circle viewed from one direction and a convex lens viewed from every orthogonal direction. It has no strict mathematical definition, but may be described as the volume enclosed within overlapping .
The term is most often used in describing jewellery and cellular phenomena in microbiology.
In history
Since ancient times, the lentoid shape has been used to fashion
jewellery and seals for identification made from a variety of
and metals. In
Minoan Crete, for example,
Minoan seals have been found with complex carving on lentoid stones.
The lentoid shape was one of the most commonly recovered seal shapes from Minoan
Knossos on Crete dating to the
Bronze Age, as evidenced by the finds at that
Bronze Age palace.
==Gallery==
in
agate: seal and impression]]
See also
