| Subject | English | Estonian |
| math. | non-null hypothesis | alternatiivhüpotees |
| math. | non-null hypothesis | sisukas hüpotees |
| math. | non-null hypothesis | mitte-nullhüpotees |
| comp., MS | null character | null-tärk (" A character code with a null value; literally, a character meaning "nothing." Although it is real in the sense of being recognizable, occupying space internally in the computer, and being sent or received as a character, a NUL character displays nothing, takes no space on the screen or on paper, and causes no specific action when sent to a printer. In ASCII, NUL is represented by the character code 0. ") |
| math. | null hypothesis | nullhüpotees |
| ed. | null hypothesis | nullhüpotees (sisukale hüpoteesile vastupidine väide, tunnustevaheliste seoste puudumine) |
| math. | null recurrent state | siirdeolek |
| math. | null recurrent state | nullsiirdeolek |
| life.sc. | null segregant | negatiivne segregant |