Studies on the effectiveness of cranberry juice for preventing or treating UTIs have produced mixed results. The red berry contains a tannin that prevents E. coli bacteria - the most common cause of urinary tract infections - from sticking to the walls of the bladder, where they can cause infection.
primary color for pigments - any of three pigments from which all colors can be obtained by mixing; the primary colors for pigments are red, blue, and yellow. primary colour for pigments. primary color, primary colour - any of three colors from which all others can be obtained by mixing.
Also found in: Encyclopedia, Wikipedia. primary colors, secondary colors - In dyes, pigments, and paints, the primary colors are red, yellow, and blueâwhich mix to make the secondary colors: orange, green, and purple. See also related terms for pigments.