rf   (TTS Sound)

The noun rf has 3 senses

• releasing factor, releasing hormone, RF -- (a substance produced by the hypothalamus that is capable of accelerating the secretion of a given hormone by the anterior pituitary gland)


• rutherfordium, Rf, unnilquadium, Unq, element 104, atomic number 104 -- (a radioactive transuranic element which has been synthesized)


• reticular formation, RF -- (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)