ed- / Indo-European roots
Examples of words with the root ed-: alfalfa, anodyne, comedo, comestible, dermestid, eat, edacious, edible, escarole, esculent, esurient, etch, frass, fret, Jotun, obese, ort, pleurodynia, prandial, Samoyed, vulvodynia.
To eat; original meaning "to bite"Oldest form *h1ed-.
a. eat from Old English etan, to eat;
b. etch from Old High German ezzen, to feed on, eat;
c. ort from Middle Dutch eten, to eat;
d. (i) fret1 from Old English fretan, to devour; (ii) frass from Old High German frezzan, to devour. Both
(i) and (ii) from Germanic compound *fra-etan, to eat up (*fra-, completely; see per1). a-d all from Germanic *etan..
2. edacious, edible, escarole, esculent, esurient; comedo, comestible, obese from Latin edere, to eat.
3. prandial from Latin compound prandium, lunch, probably from *prām-(e)d-yo-, "first meal" *prām-, first; see per1
4. Suffixed form *ed-un-o-. jotun from Old Norse jötunn, giant, jotun, from Germanic idunaz (perhaps < "immense eater" or "man-eating giant").
5. Suffixed form *ed-un-ā-. anodyne, pleurodynia from Greek odunē, pain (< "gnawing care").
6. Suffixed zero-grade form *əd-ti-. alfalfa from Old Iranian *-sti-, food, in compound.*aspa-sti-clover, alfalfa ("horse food") (*aspa-, horse; see ekwo-)
7. Samoyed from Russian -ed, eater.
[Pokorny ed- 287.]