The word '''propagation''' can mean: *Multiplication or increase, as by natural Reproduction. In artificial reproduction see Propagation_of_schema. *In Genetics, propagation is another term for the elongation part of transcription. *In Agriculture and Horticulture, propagation is the production of increased numbers of Plants, by Seeds, Cuttings, Grafting or other methods. *In Religion, '''propagation''' is a term often used for winning new converts to the particular religion. *In Physics, '''propagation''' is the motion of Waves through or along a medium. *In Chemistry, '''propagation''' describes the catalytically-driven process of Polymer elongation. *In Psychological_Operations, '''propagation''' is some degree of success in the spread of Propaganda. *In Digital_circuits, Propagation_delay is the time between input and output of Logic_gates. Note: For Electromagnetic_waves, propagation may occur in a vacuum as well as in a material Transmission_medium. See also: Photon, Waveguide, Polarization, Antenna_theory {{disambig}} De:Ausbreitung Fr:Propagation_des_ondes Pl:Propagacja