| Subject | English | Portuguese |
| comp., MS, Braz. | sparse array | matriz esparsa (An array (arrangement of items) in which many of the entries are identical, commonly zero. It is not possible to define precisely when an array is sparse, but it is clear that at some point, usually when about one-third of the array consists of identical entries, it becomes worthwhile to redefine the array) |
| comp., MS, Braz. | sparse column | coluna esparsa (A column that reduces the storage requirement for null values at the cost of more overhead to retrieve nonnull values) |