| Subject | English | Japanese |
| tech. | over sparse city | 過疎都市 (かそとし) |
| comp., MS | sparse array | 疎な配列 (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 | sparse column | スパース列 (A column that reduces the storage requirement for null values at the cost of more overhead to retrieve nonnull values) |
| comp., MS | sparse file | スパース ファイル (A file that is handled in a way that requires much less disk space than would otherwise be needed. Sparse support allows an application to create very large files without committing disk space for those regions of the file that contain only zeros. For example, you can use sparse support to work with a 42-GB file in which you need to write data only to the first 64 KB (the rest of the file is zeroed)) |
| gen. | n sparse hair | 薄毛 (as in balding) |
| math. | n sparse matrix | 疎行列 |
| tech. | sparse matrix | スバース•マトリックス |
| gen. | n sparse or dense | 疎密 (growth) |
| gen. | n sparse or dense | 粗密 (growth) |
| tech. | sparse planting | 疎植 (そしょく) |
| gen. | n sparse sowing | 粗播き (seeding) |
| construct. | sparse wood | 疎林 (そりん) |
| gen. | n sparse woods | 疎林 (そりん) |