1. Belonging to a tree.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• arborrous,
• zrborous,
• srborous,
• wrborous,
• qrborous,
• aeborous,
• adborous,
• afborous,
• atborous,
• a5borous,
• a4borous,
• arvorous,
• arnorous,
• arborus,
• arbosous,
• arburus,
• harbrous,
• Herborous,
• arbourous,
• arbrours

• arboreous,
• arbour,
• arboretum,
• arboraceous,
• arborvirus,
• arboresque,
• arborise,
• arborary,
• arbor,
• arborize,
• arborist,
• arboreal,
• arborolatry,
• arborescent,
• arboriform.

The adjective form of "arborous" is "arboreal".

The plural form of the word "arborous" is "arborous".

The singular form of the word "arborous" is "arbor"