- * * *Abbreviation for releasing factors; rheumatoid factors, under factor; replicative form; reticular formation.* * *radial fiber; radiofrequency; rapid filling; readiness field; reading factor; receptive field; regurgitant fraction; Reitland-Franklin [unit]; relative flow; relative fluorescence; release factor; renal failure; replacement fluid; replication factor; replicative form; repopulation factor [radiotherapy]; resistance factor; resonant frequency; respiratory failure; respiratory frequency; reticular formation; retroperitoneal fibromatosis; rheumatic fever; rheumatoid factor; riboflavin; risk factor; root canal filling; rosette formation
* * *RF abbr rheumatic fever
* * *in paper or thin-layer chromatography, the distance moved by a solute spot from the origin expressed as a fraction of the distance moved by the solvent front.
Medical dictionary. 2011.