Corundum is predicted to be the most abundant refractory circumstellar dust and has been suggested as a candidate emitting the 13 mu m feature in infrared spectra of oxygen-rich asymptotic giant branch stars. Crystalline dust has morphologies reflecting the anisotropic crystal structure and formation conditions or processes. and may emit characteristic infrared features. In this study, evaporation and condensation experiments of corundum along different crystallographic orientations were performed in vacuum to determine key kinetic parameters controlling morphological anisotropy: evaporation and condensation coefficients (alpha(e) and alpha(c)), the degrees of kinetic hindrance on evaporation and condensation. Plausible shapes of corundum condensates were estimated from the experimental results to evaluate the infrared features of corundum condensates. The evaporation coefficients of corundum are 0.02-0.2 at 1600-1785 degrees C, which increase with temperature and show notable anisotropy. The order of ae along the crystallographic c, a, and m. axes is alpha(m)(e) >> alpha(e) (a) > alpha(c)(e) irrespective of temperature. The obtained condensation coefficients along the c, a, and m. axes at 1575 degrees C and a supersaturation ratio of similar to 4 are 0.04-0.06, 0.06-0.08, and 0.1-0.2, respectively. The morphology of condensed circumstellar corundum expected from our experiments is oblate and slightly flattened to the c. axis. and is consistent with the fact that no presolar corundum with eccentric shapes has been found. The mass absorption coefficient of oblate corundum slightly flattened to the c. axis shows a peak at 13 mu m without any accompanying strong peaks. These results strongly indicate that corundum condensed anisotropically in circumstellar environments is a carrier of the unidentified 13 mu m feature around oxygen-rich evolved stars.