The Collaborative International Dictionary
Euphorbial
Euphorbiaceous \Eu*phor`bi*a"ceous\, Euphorbial \Eu*phor"bi*al\, a. (Bot.) Of, relating to, or resembling, the Euphorbia family.
Wiktionary
euphorbial
a. (context botany English) Belonging to the Euphorbiaceae; euphorbiaceous.