rf Meaning, Definition & Usage

1. noun a substance produced by the hypothalamus that is capable of accelerating the secretion of a given hormone by the anterior pituitary gland
   releasing factor; releasing hormone.
   
2. noun a radioactive transuranic element which has been synthesized
   rutherfordium; unnilquadium; Unq; element 104; atomic number 104.
   
3. noun a complex neural network in the central core of the brainstem; monitors the state of the body and functions in such processes as arousal and sleep and attention and muscle tone
   reticular formation.
   

WordNet