subconic
/ˌsʌbˈkɒnɪk/Definitions
1. adjective
relating to or forming a cone that has been cut off by a plane parallel to its base
“The subconic shape of the sculpture added to its visual appeal.”
2. noun
a conical shape that has been cut off by a plane parallel to its base
“The subconic shape of the building’s design was a major talking point.”