1D

1D, 1-D, or 1d can refer to:One-dimensional space in physics and mathematics Alpha-1D adrenergic receptor Astra 1D, a satellite Canon EOS-1D, Canon's first professional digital camera Long March 1D, a satellite One Direction, an English-Irish boy band Penny, routinely abbreviated 1d 1D, the hexadecimal code for the Group Separator control character Informal for Onedrive, a file hosting system operated by Microsoft