melg- / Indo-European roots
Examples of words with the root melg-: adelgid, agalactia, arroz con leche, caffe latte, dulce de leche, emulsion, galacto-, galantamine, galaxy, lacteal, lactescent, lacto-, lettuce, milch, milchig, milk, polygala.
To rub off; also to milk.Oldest form *h2melg̑-, becoming *h2melg- in centum languages.
1. Zero-grade form *ml̥g-. emulsion from Latin mulgēre, to milk.
2. Full-grade form *melg-. a. milk from Old English meolc, milc; b. milch from Old English -milce, milch, from Germanic suffixed form *meluk-ja-, giving milk; c. milchig from Old High German miluh, milk. a-c all from Germanic *melkan, to milk, contaminated with an unrelated noun for milk, cognate with the Greek and Latin forms given in II below, to form the blend *meluk-.
II. Included here to mark the unexplained fact that no common Indo-European noun for milk can be reconstructed is another root *g(a)lag-, *g(a)lakt-, milk, found only in the following:
1. galactic, galacto-, galaxy; agalactia, polygala from Greek gala (stem galakt-), milk.
2. lactate1, lactate2, lacteal, lactescent, lacto-, latte, lettuce; arroz con leche, dulce de leche from Latin lac, milk.
3. The blended Germanic form cited in I. 2. above.
[Pokorny mē̆lg̑- 722, glag- 400.]