a system of rating the quality of dietary protein by the number and proportions of the essential amino acids contained in it

a colourless, non-flammable, toxic liquid, C2Cl4, which is widely used as a solvent, esp. in dry-cleaning fluid, and medicinally for the treatment of worm infestations, a colourless nonflammable volatile liquid, CCl2 = CCl2; r.d. 1.6; m.p. –22°C; b.p. 121°C

a system of rating the quality of dietary protein by the number and proportions of the essential amino acids contained in it