PCR stands for Polymerase Chain Reaction. The letter 'P' stands for Polymerase (specifically thermostable DNA polymerase such as Taq polymerase), which synthesizes complementary DNA strands in iterative cycles of thermal denaturation, annealing, and primer extension.
PCR का पूरा नाम 'Polymerase Chain Reaction' है, जिसमें 'P' का अर्थ डीएनए पॉलीमरेज़ (Polymerase) एंजाइम है।