| Subject | English | Basque |
| math. | Bartlett's test of second order interaction | Bartlett en ordena bigarren elkarrekintza froga |
| comp., MS | bits per second | bit segundoko (The number of bits transmitted every second, used as a measure of the speed at which a device, such as a modem, can transfer data) |
| math. | error of second kind | bigarren motako errore |
| math. | error of second kind | beta akats |
| math. | Pareto distribution of the second kind | Lomax-ren banaketa |
| math. | Pareto distribution of the second kind | Pareto-ren banaketa |
| environ. | second-hand goods Goods or products that have been used previously | bigarren eskuko salgai |
| math. | second kind model | eredua II |
| math. | second kind model | bigarren mota eredua |
| math. | second kind model | ausazko efektuen ereduaren |
| math. | second law of Laplace | banaketa normal |
| comp., MS | Second screen | Bigarren pantaila (The UI label that indicates a screen or monitor that is attached to a PC and that content can be projected on to) |
| math. | second- stage unit | bigarren mailako laginketa-unitate |