Strong's Concordance

Original word: ἕξις
Transliteration: hexis
Definition (short): practice
Definition (full): habit, practice

NAS Exhaustive Concordance

Word Origin: from echó
Definition: habit, practice
NASB Translation: practice (1).
NAS Exhaustive Concordance of the Bible with Hebrew-Aramaic and Greek Dictionaries.
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Strong's Exhaustive Concordance

From echo; habit, i.e. (by implication) practice -- use.

see GREEK echo

KJV: But strong meat belongeth to them that are of full age, even those who by reason of use have their senses exercised to discern both good and evil.
NASB: But solid food is for the mature, who because of practice have their senses trained to discern good and evil.