| Subject | English | Estonian |
| math. | David's empty cell test | Davidi tühja lahtri test |
| math. | empty cell test | tühjade ruutude test |
| comp., MS | empty GUID | tühi GUID (A 128-bit, 16-byte identification number that is represented by all zeros) |
| ed. | empty space | tühik (infonduses: ühe märgi pikkune tühi koht märkide vahel) |
| med. | operating weight empty | töömass |
| math. | Wilks' empty cell test | Wilksi tühja lahtri test |