ETD

ETD is an abbreviation for:

• Electron Transfer Dissociation , an ionization technique in mass spectrometry
• Permitted daily dose , toxicological limit value for drugs or food additives
• Etihad Airways , an airline of the Emirate of Abu Dhabi (ICAO code)
• Everhart-Thornley detector , an electron detector in the scanning electron microscope
• Eye-Tracking -Device, a measuring device for investigations of three-dimensional eye and head movements

This is a disambiguation page for differentiating between several terms identified with the same word.