dentation; tooth-like shape
Technical term used in biology, botany, or descriptive morphology for a tooth-like or serrated shape.
この葉の縁は歯牙状になっている。
The margin of this leaf is dentate.
Compound of 歯牙 (shiga, 'teeth') and 状 (jō, 'shape' or 'form'). The exact historical derivation is uncertain; the spelling is conventionally associated with the meaning.