sreu-

To flow.

1. Suffixed o-grade form *srou-mo-.

a. stream, from Old English strēam, stream;

b. maelstrom, from Middle Dutch stroom, stream. Both a and b from Germanic *straumaz, stream.

2. Basic form *sreu-.

a. rheo-, -rrhea; catarrh, diarrhea, hemorrhoid, rhyolite, from Greek rhein, to flow, with o-grade rhoos, flowing, a flowing;

b. suffixed form *sreu-mn̥. rheum, from Greek rheuma, stream, humor of the body.

3. Suffixed zero-grade form *sru-dhmo-. rhythm, from Greek rhuthmos, measure, recurring motion, rhythm.

4. Suffixed zero-grade form *sru-to-. rhyton, from Greek rhutos, fluid, liquid.

5. Perhaps zero-grade extended form *srug-. sastruga, from Russian struga, deep place.

 

[Pokorny sreu- 1003.]

* * *