Divides into three equal parts

• Divides into three
• Turns into a Mercedes-Benz logo, say, as a circle
• Makes three out of one
• Cuts geometrically
• Cuts into three parts
• Divides in three
• Creates three equal parts
• Divides into three parts

Wiktionary Word definitions in Wiktionary
vb. (en-third-person singular of: trisect )