From Planet X
1. To cause (an organism) to multiply or breed. 2. To breed (offspring). 3. To transmit (characteristics) from one generation to another. 4. missionaries who propagate the faith. 5. propagate a rumor. 6. To cause (a wave, for example) to move in some direction or through a medium; transmit. 7. To have offspring; multiply. 8. To extend to a broader area or larger number; spread. 9. To move through a medium.