noun, noun which may take the genitive case particle 'no'
lanceolate (leaf shape)
Botanical term describing a leaf that is shaped like a lance head, narrow and tapering to a point at both ends, with the widest part below the middle.
この植物の葉は披針形で、先端がとがっている。
The leaves of this plant are lanceolate, with pointed tips.
楕円形 means elliptical, with a more evenly rounded outline, unlike the pointed lance shape of 披針形.
From 披 (open, spread) + 針 (needle) + 形 (shape), referring to a shape resembling a spread needle or lance head. The term is a direct calque from botanical Latin 'lanceolatus'.