Protein in urine â known as proteinuria (pro-tee-NU-ree-uh) â is excess protein found in a urine sample. Protein is one of the substances identified during a test to analyze the content of your urine (urinalysis). Low levels of protein in urine are normal. Temporarily high levels of protein in urine aren't unusual either, particularly in younger people after exercise or during an illness. Persistently high levels of protein in urine may be a sign of kidney disease.
Princeton's WordNet(0.00 / 0 votes)Rate this definition: principal, school principal, head teacher, head(noun) the educator who has executive authority for a school. she sent unruly pupils to see the principal.
A principle is broadly âa rule of action or conductâ or âa fundamental doctrine or tenet.â The adjective principal has the general sense âchief, first, foremost.â The noun principal has among other meanings âthe head or director of a schoolâ and âa capital sum, as distinguished from interest or profit.â.