Lexical Definition

‎ἕξις‎ héxis (hex'-is) habit/practice ^G:N-F
from ‎ἔχω‎

use.

• habit, i.e. (by implication) practice

Abbott-Smith

† ἕξις, -εως, ἡ (< ἔχω), [in LXX, cf. Si, prol. 9 ;]
habit, use, experience: He 5:14.†

Abbott-Smith References

Liddell-Scott-Jones

ἕξις, εως, ἡ,

(ἔχω):

__I (ἔχω transitive) having, being in possession of, possession, ἐπιστήμης ἕ., opposed to κτῆσις, [Refs 5th c.BC+]; opposed to στέρησις,[Refs 2nd c.AD+]
__I.2 in surgery, posture, [Refs 5th c.BC+]
__II (ἔχω intransitive) a being in a certain state, a permanent condition as produced by practice (πρᾶξις), different from σχέσις (which is alterable) (see. below):
__II.1 state or habit of body, [Refs 5th c.BC+]; ἕ. ὑγιεινή (so also [Refs 5th c.BC+]: generally, condition, ἐν ἕξει τοῦ δρᾶν [Refs 5th c.BC+]; outward appearance, ἡ ἕ. τοῦ σώματος κρείσσων [LXX+2nd c.AD+]; habit of a vine, [Refs 4th c.BC+]; of material objects, ὑπὸ μιᾶς ἕξεως συνέχεσθαι [Refs 1st c.AD+]
__II.1.b medical, the system, [Refs 2nd c.AD+]
__II.2 state or habit of mind, ἕ. κακίης [Refs 5th c.BC+]; ἡ ἐν τῇ ψυχῇ ἕ., opposed to ἡ τῶν σωμάτων ἕ., [Refs][same place]; πονηρᾶς ψυχῆς ἕξει[Refs]
__II.2.b especially acquired habit, opposed to ἐνέργεια, [Refs 4th c.BC+]
__II.3 trained habit, skill, [Refs 5th c.BC+]; τέχνη defined as ἕ. ἢ διάθεσις ἀπὸ παρατηρήσεως [Refs 5th c.BC+] (Almost confined to Prose, but[Refs 5th c.AD+]

_{LSJ Scripture Refs: LXX.Dan.1.15 ☩ LXX.1Kgs.16.7 ☩ LXX.Lam.4.7}