poly·con·ic projection noun \ˌpä-lē-ˈkä-nik-\
: a map projection consisting of a composite series of concentric cones each of which before being unrolled has been placed over a sphere so as to be tangent to a different parallel of latitude
First Known Use of POLYCONIC PROJECTION
Seen & Heard
What made you want to look up polyconic projection? Please tell us where you read or heard it (including the quote, if possible).