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Browse the Medical Dictionary:: A; B; C; D; E; F; G; H; I; J; K; L; M; N; O; P; Q; R; S; T; U; V; W; X; Y; Z; #

mass number

One entry found.

Main Entry: mass number

Function: noun

: an integer that approximates the mass of an isotope and that designates the number of nucleons in the nucleus <the symbol for carbon of mass number 14 is ¹⁴C or C¹⁴>—compare atomic mass

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