1. Relating to any rostrum or anatomic structure resembling a beak. 2. At the head end. SYN: rostralis [TA]. [L. rostralis, fr. rostrum, beak]
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ros·tral 'räs-trəlalso 'rȯs- adj
1) of or relating to a rostrum
2) situated toward the oral or nasal region: as
b) of a part of the brain anterior or ventral <the \rostral pons>
ros·tral·ly -ē adv
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ros·tral (rosґtrəl) [L. rostralis, q.v.] 1. pertaining to or resembling a rostrum; having a rostrum or beak. toward a rostrum or beak. 2. in human anatomy, toward the oral and nasal region, which may mean superior (for areas of the spinal cord) or anterior (for brain areas).Medical dictionary. 2011.