Lexical Definition

‎ὁσιότης‎ hosiótēs (hos-ee-ot'-ace) holiness ^G:N-F
from ‎ὅσιος‎

holiness.

• piety

Abbott-Smith

ὁσιότης, -ητος, ἡ (< ὅσιος), [in LXX: De 9:5 (יֹשֶׁר), I Ki 14:41, III Ki 9:4 (תֹּם, תָּמִים), Pr 14:32, Wi 2:22 5:19 9:3 14:30*;]
piety, holiness: assoc. with δικαιοσύνη, Lk 1:75, Eph 4:24.†
SYN.: v.s. ἅγιος.

Abbott-Smith References

Liddell-Scott-Jones

ὁσιότης-ότης, ητος, ἡ,

disposition to observe divine law, piety, [Refs 5th c.BC+]; πρὸς θεῶν ὁ. piety towards them, [Refs 1st c.AD+]; also, like Latin pietas, ἡ πρὸς γονεῖς ὁ. [Refs 1st c.BC+]