conical

Etymology

From conic + -al.

adj

1. (geometry) Of or relating to a cone or cones.
   He anſwers, That this Motion is Conical; and judgeth, that by the Conick path all the Phænomena of Comets can, without any inconveniency, be readily ſolved; even of that, which (by Hiſtory) in fifty days, paſſed through more then the 12 Signs of the Zodiack; And of that, which in two days run through eight Signs: and of another, which in 48 days poſted through all the Signs, contra ſeriem. 1665-11-06, “An Account of Hevelius his Prodromus Cometicus, together with some Animadversions made upon it by a French Philosopher”, in Henry Oldenburg, editor, Philosophical Transactions, volume I, number 6
2. Shaped like a cone.
   IN Planes neither equinoctiall nor polar, the equator will be a right line, the tropiques and other parallels of declination will be conicall ſections, ſome of them parabolicall, ſome ellipticall, but the moſt of them hyperbolicall. 1624, Edmund Gunter, chapter XIII, in The Description and Vse of the Sector, London: Williã Jones, page 149
3. (cartography) Describing a map projection in which meridians are mapped to equally spaced lines radiating out from the apex and parallels of latitude are mapped to circular arcs centred on the apex.

noun

1. (firearms) A bullet with a conical shape.