1) Asterid dicot family 
• (a.) Of pertaining to, or resembling, the family of plants of which the trumpet flower is an example.
Big·no`ni·a'ceous adjective (Botany) Of pertaining to, or resembling, the family of plants of which the trumpet flower is an example. 
[adj] - of or pertaining to or characteristic of plants of the family Bignoniaceae
adjective of or pertaining to or characteristic of plants of the family Bignoniaceae
belonging to the plant family Bignoniaceae. Cf. bignonia (def. 2).