cerealian
/ˌsɛriˈɑlɪən/Definitions
1. noun
A cereal grain, especially one that is high in fiber and nutrients, used as a primary ingredient in breakfast foods.
“The grocery store was promoting a new line of cerealian-based breakfast options.”
2. adjective
Relating to or derived from cereal grains.
“Cerealian-based snacks are popular among health-conscious consumers.”