a structure in the chloroplast of photosynthesizing cells, usu. one of an interconnected stack, having a pigmented membrane that is the site of photosynthesis. [< German Thylakoid (1961) < Greek thÈ³lakoeidá¸s resembling a bag =thylak(os) sack + -oÄidÄs -oid]
Round or rump roast almost two hours to reach medium rare, 3-pound roast six hours on low or longer. In a crock pot. On the stove top in a Dutch oven around two hours. Extra 15 minutes may be extended for medium or 30 minutes for well done. (source: http://www.ehow.com/way_5260879_long-cook-pound-roast.html).
Check out recipetips.com on Beef Cooking Times. I can give the time and temp for tip round roast beef: Round tip roast 325Â°F for 3-4 lbs for rare is 28-30 min, for med rare is 30-35min, for medium is 38-45 min, for med well is 45-48 min, and for well is 48-50 min.est Answer: In a preheated 300 degree oven..about 25 minutes per pound for medium..30 minutes for well done. assuming the roast is room temperature or close when put in. if you have a meat thermometer you want 150 degrees in the center for medium or 160 for well.