Lexical Definition

‎δευτερόπρωτος‎ deuteróprōtos (dyoo-ter-op'-ro-tos) second-first ^G:A
from ‎δεύτερος‎ and ‎πρῶτος‎

second … after the first.

• second-first, i.e. (specially) a designation of the Sabbath immediately after the Paschal week (being the second after Passover day, and the first of the seven Sabbaths intervening before Pentecost)

Abbott-Smith

*† δευτερό-πρωτος, -ον
second-first (in what sense, there is no satisfactory explanation. The reading is prob. not original, v. ICC, in l.; DCG, i, 411; ii, 541, 724): Lk 6:1, WH, mg., R, mg.†

Abbott-Smith References

Liddell-Scott-Jones

δευτερόπρωτος-πρωτον σάββατον, τό,

probably corrupt in [NT].

_{LSJ Scripture Refs: Luke.6.1}