X-band ( -9.4 GHz) microwave-absorption measurements have been performed on single and polycrystals of the high-T, superconducting material Bi,Sr,CaCu 2 0 8+d in the temperature range 4.2-100 K. The microwave absorption indicated the onset of the transition to the superconducting phase at 89 K, the transition to the superconducting phase being complete at 84 K. Lowfield microwave absorptions were recorded at temperatures below 89 K. These absorptions exhibited large anisotropies with respect to the relative orientations of the microwave and external magnetic fields; as well, they exhibited dependence on the orientation of the c-axis of the crystals relative to the external and microwave fields. The magnetic hysteresis, as well as the effect of field cooling on microwave absorption were also investigated and the equilibrium fields, Bcq, were determined. In addition, the value of the lower critical field Bh has been estimated. It is concluded that, although some features of microwave absorptions are common to the various samples investigated, there exist some significant differences in the natures of the microwave absorption by the samples; an explanation based on the existence of isolated superconducting grains and defects has been provided.