| Subject | English | Polish |
| gen. | declaring null and void | unieważnienie nt |
| antenn. | directional null | zero kierunkowe |
| antenn. | directional-null antenna | antena z zerami kierunkowymi |
| math. | non-null hypothesis | hipoteza alternatywna |
| math. | non-null hypothesis | hipoteza niezerowa |
| telegr. | null character | znak pusty |
| comp., MS | null character | znak null (" 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. ") |
| anal.chem. | null-current potentiometric titration | miareczkowanie potencjometryczne |
| anal.chem. | null-current potentiometry | potencjometria |
| anal.chem. | null-current potentiometry | analiza potencjometryczna |
| chem. | null electrode | elektroda zerowa |
| comp., MS | null field | pole null (" A field containing a Null value. A null field isn't the same as a field that contains a zero-length string (" ") or a field with a value of 0.") |
| math. | null hypothesis | hipoteza zerowa |
| comp., MS | null key | klucz o wartości null (A null value that is encountered in a key column) |
| el., meas.inst. | null method of measurement | metoda zerowa |
| el., meas.inst. | null method of measurement | metoda pomiarowa zerowa |
| comp., MS | null modem | pseudomodem (Special cabling that eliminates the modem's need for asynchronous communications between two computers over short distances. A null modem cable emulates modem communication) |
| comp., MS | null pointer | pusty wskaźnik (A pointer to nothing: usually a standardized memory address, such as 0. A null pointer usually marks the last of a linear sequence of pointers or indicates that a data search operation has come up empty) |
| math. | null recurrent state | stan chwilowy |
| math. | null recurrent state | stan niepowtarzający się |
| math. | null recurrent state | niepowtarzalny stan |
| comp., MS | null reference | pusta referencja (In C++, a reference that has not been assigned an object) |
| life.sc. | null segregant | negatywny segregant |
| tech. | null shift | błąd pełzania zera |
| antenn. | null-steering antenna | antena ze sterowanymi zerami |
| chem. | null valence | wartościowość zerowa |
| anal.chem. | precision null-point potentiometry | potencjometria różnicowa |