Lexical Definition

‎ἅλωσις‎ hálōsis (hal'-o-sis) capture G:N-F
from a collateral form of ‎αἱρέομαι‎

Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
ἅλωσιν capture 2Pet.2.12
αλώσεωσ of conquest LXX.Jer.50.46

Abbott-Smith

ἅλωσις, -εως, ἡ (< ἁλίσκομαι), [in LXX: Je 50:46 (תּפשׂ ni.)*;]
a taking, capture: II Pe 2:12.†

Abbott-Smith References

Book Refs
Jeremiah 50:46
2 Peter 2:12

Liddell-Scott-Jones

ἅλωσις-ωσις, εως,

Ionic dialect ιος, , capture, [Refs 5th c.BC+]; δαΐων . conquest by enemy, [Refs]: means of conquest, [Refs 5th c.BC+]

__2 taking, catching of birds and fish, [Refs 4th c.BC+]; ἑαλωκότες ἰσχυρὰν ἅλωσιςωσιν taken without power to escape, [Refs 1st c.AD+]
__II law-term, conviction, [Refs 5th c.BC+]