1. Beginning; being born or produced. 2. Denoting the state of a chemical element at the moment it is set free from one of its compounds. [L. nascor, pres. p. nascens, to be born]
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na·scent 'nas-ənt, 'nās- adj
1) coming or having recently come into existence: beginning to develop <\nascent polypeptide chains>
2) of, relating to, or being an atom or substance at the moment of its formation usu. with the implication of greater reactivity than otherwise <\nascent hydrogen>
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nas·cent (nasґənt) (naґsənt) [L. nascens] 1. just born; just coming into existence. 2. just liberated from a chemical combination, and hence more reactive because uncombined.Medical dictionary. 2011.