sem·i·con·ser·va·tive replication 
(sĕm′ē-kən-sûrvə-tĭv, sĕm′ī-)
(sĕm′ē-kən-sûrvə-tĭv, sĕm′ī-)n.
The normal process of DNA synthesis, in which the two original strands of the molecule separate, and each strand acts as a template for the synthesis of a new, complementary strand. Each new DNA molecule consists of one old strand and one new strand.