nascent

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nascent

Chem (of an element or simple compound, esp hydrogen) created within the reaction medium in the atomic form and having a high activity

nascent

[′nā·sənt]
(chemistry)
Pertaining to an atom or simple compound at the moment of its liberation from chemical combination, when it may have greater activity than in its usual state.
References in periodicals archive ?
Recall that in extending a nascent DNA strand such as from an oligonucleotide primer annealed to its specific complementary target, DNA polymerases incorporate dNTPs as nucleotide monophosphates in the nascent strand.
When one of these is incorporated in place of a regular dCTP, the growing nascent DNA chain terminates, as there is no 3'-OH for the polymerase to extend from.