pet·i·o·lar \ˈped.ēˌōlə(r), ˌ ̷ ̷ ̷ ̷ˈ ̷ ̷ ̷ ̷\adjective Etymology: New Latin petiolaris, from petiolus petiole + Latin -aris -ar : of, relating to, or proceeding from a petiole : growing or supported upon a petiole < a petiolar tendril > < a petiolar gland >