資料來源 : Webster's Revised Unabridged Dictionary (1913)

Arborical \Ar*bor"ic*al\, a.
   Relating to trees. [Obs.]

資料來源 : WordNet®

arborical
     adj : of or relating to or formed by trees; "an arborous roof"
           [syn: {arboreal}, {arborary}, {arborous}]