Muon radiative energy loss (in 1.0E06 cm^2/g) in lead oxide (PbO) with Z/A = 0.40323 (f12.0,4f12.4) E (GeV) b_brem b_pair b_nucl b_total 2. 1.8276 0.3906 0.3698 2.5880 5. 2.5351 1.8090 0.3945 4.7387 10. 3.1128 2.9116 0.3866 6.4110 20. 3.7059 3.9357 0.3726 8.0142 50. 4.4820 5.4960 0.3569 10.3349 100. 5.0337 6.5267 0.3496 11.9099 200. 5.5373 7.4402 0.3460 13.3234 500. 6.1020 8.2776 0.3461 14.7257 1000. 6.4419 8.7217 0.3515 15.5151 2000. 6.7061 9.0415 0.3600 16.1076 5000. 6.9511 9.3089 0.3756 16.6356 10000. 7.0723 9.4323 0.3911 16.8957 20000. 7.1525 9.5127 0.4092 17.0744 50000. 7.2189 9.5726 0.4373 17.2288 100000. 7.2483 9.5976 0.4615 17.3074