I. ˈsir-ē-əl adjective
Etymology: French or Latin; French céréale, from Latin cerealis of Ceres, of grain, from Ceres
Date: 1818
: relating to grain or to the plants that produce it ; also : made of grain
II. noun
Date: 1832
1. : a plant (as a grass) yielding starchy grain suitable for food ; also : its grain
2. : a prepared foodstuff of grain (as oatmeal or cornflakes)