[ran-duh
m-ak-ses] 
[di-rekt-ak-ses, -ak-, dahy-] | 1. | pertaining to the ability to obtain data from, or place data in, external storage without the need to sequentially scan other data contained there. |
| 2. | pertaining to the method of organization and access used for a data structure in which records are located by their keys, without reference to other records that may have been previously accessed. |