noun
a sensory structure capable of light reception located on the dorsal side of the diencephalon in various reptiles
• Syn: ↑third eye
• Hypernyms: ↑sense organ, ↑sensory receptor, ↑receptor
• Part Holonyms: ↑diencephalon, ↑interbrain, ↑betweenbrain, ↑thalmencephalon
Useful english dictionary. 2012.