Greek Strong's Lexicon

G1207

Lemma: δευτερόπρωτος

Transliteration: dyoo-ter-op'-ro-tos

Definition: from δεύτερος and πρῶτος; 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)

KJV Definition: second … after the first