Lexical Definition

‎ἀδελφότης‎ adelphótēs (ad-el-fot'-ace) brotherhood ^G:N-F
from ‎ἀδελφός‎

brethren, brotherhood.

• brotherhood (properly, the feeling of brotherliness), i.e. the (Christian) fraternity

Abbott-Smith

**† ἀδελφότης, -ητος, ἡ (< ἀδελφός), [in LXX: I Mac 12:10, 17, IV Mac5*;]

1. abstract, brotherhood, brotherly affection (LXX).
2. Concrete, the brotherhood, the Christian community: I Pe 2:17 5:9 (MM, VGT, s.v.).†

Abbott-Smith References

Liddell-Scott-Jones

ἀδελφότης, ητος, ἡ,

brotherhood, [LXX+1st c.AD+]: metaphorically, of men and animals, [Refs 4th c.AD+]

__II the brotherhood, [NT]
__III as form of address, ἡ σὴ ἀ.[Refs]

_{LSJ Scripture Refs: 1Pet.2.17}