ORN stands for Olfatory Receptor Neuron, a type of cell that resides in the nasal mucosa and has the property of converting the presence of odorizing molecules into neuronal signals 2 . Second book in Pier Anthony's trilogy, The Man from Manta. 3 . Name and surname . 4 . Acronym of Olympic Route Network circuit or network of roads that connect the different points of events in an Olympics. 5 . Osteoradionecrosis, would be a complication product of the treatment of a cancer by means of radiotherapy.
