From akron and probably a modified form of posthe (the penis or male sexual organ); the prepuce; by implication, an uncircumcised (i.e. Gentile, figuratively, unregenerate) state or person -- not circumcised, uncircumcised (with echo), uncircumcision.
see GREEK akron
see GREEK echo
a. properly: Acts 11:3; Romans 2:25, 26{b}; 1 Corinthians 7:19; Galatians 5:6; Galatians 6:15; Colossians 3:11; (Judith 14:10; 1 Macc. 1:15); ἐν ἀκροβυστία ὤν having the foreskin (Tertullianpraeputiatus), uncircumcised i. e. Gentile, Romans 4:10; ἐν ἀκροβυστία, namely, ὤν, 1 Corinthians 7:18; equivalent, to the same is δἰ ἀκροβυστίας, Romans 4:11; ἡ ἐν τῇ ἀκροβυστία πίστις the faith which one has while he is uncircumcised, Romans 4:11f,
b. by metonyny, of the abstract for the concrete, having the foreskin is equiv. to a Gentile: Romans 2:26{a}; c. in a transferred sense: ἡ ἀκροβυστία τῆς σαρκός (opposed to the περιτομή ἀχειροποίητος or regeneration, Colossians 2:11), "the condition in which the corrupt desires rooted in the σάρξ were not yet extinct," Colossians 2:13 (the expression is derived from the circumstance that the foreskin was the sign of impurity and alienation from God (cf. B. D. under the word