| Subject | German | English |
| earth.sc., el. | E-Filter | electrostatic filter |
| earth.sc., el. | E-Filter | electrostatic precipitator |
| earth.sc., el. | E-Filter | electric precipitator |
| comp., MS | E-Mail-Filter | e-mail filter (A feature in e-mail-reading software that automatically sorts incoming mail into different folders or mailboxes based on information contained in the message) |
| comp., MS | Junk-E-Mail-Filter | junk e-mail filter (An e-mail filter that enables the user to set the strictness level that keeps junk e-mail from being delivered to their Inbox) |