reproduction proof

18 LETTERS · STARTS WITH R

reproduction proof is a valid 18-letter word worth 27 points in Scrabble and 32 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

R1E1P3R1O1D2U1C3T1I1O1N1P3R1O1O1F4

1 + 1 + 3 + 1 + 1 + 2 + 1 + 3 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 1 + 4 =27 PTS

DOUBLE WORD → 54TRIPLE WORD → 81

MEANING

What does reproduction proof mean?