med- / Indo-European roots
Examples of words with the root med-: commodious, empty, immoderate, immodest, medical, medicate, meditate, Medusa, meet, mete, metheglin, modal, mode, model, moderate, modern, modest, modicum, modify, modiolus, modulate, module, modulus, mold, mote, must, mutchkin, remedy.
To take appropriate measures.
▲ Derivatives include medicine, modest, modern, commodity, empty.
a. mete1 from Old English metan, to measure (out), from Germanic *metan;
b. meet2 from Old English gemǣte, "commensurate" fit (ge-, with; see kom) , from Germanic derivative *mǣtō, measure.
a. medical, medicate, medicine, medico; metheglin, remedy from Latin medērī, to look after, heal, cure;
b. meditate from Latin meditārī, to think about, consider, reflect.
3. Suffixed form *med-es-.
a. modest; immodest from Latin modestus, "keeping to the appropriate measure" moderate;
b. moderate; immoderate from Latin moderārī, "to keep within measure" to moderate, control. Both a and b from Latin *modes-, replacing *medes- by influence of modus (see 5 below).
4. Medusa from Greek medein, to rule (feminine participle medousa < *med-ont-ya).
5. Suffixed o-grade form *mod-o-. modal, mode, model, modern, modicum, modify, modulate, module, modulus, mold1, mood2, moulage; accommodate, commode, commodious, commodity from Latin modus, measure, size, limit, manner, harmony, melody.
6. Suffixed o-grade form *mod-yo-. modiolus, mutchkin from Latin modius, a measure of grain.
7. Possibly lengthened o-grade form *mōd-.
a. mote2, must1 from Old English mōtan, to have occasion, to be permitted or obliged;
b. empty from Old English ǣmetta, rest, leisure, from Germanic compound *ē-mōt-ja- (prefix *ē-, meaning uncertain, from Indo-European *ē, *ō, to). Both a and b from Germanic *mōt-, ability, leisure.
[Pokorny 1. med- 705.]