vertical mobility

17 LETTERS · STARTS WITH V

vertical mobility is a valid 17-letter word worth 28 points in Scrabble and 33 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

V4E1R1T1I1C3A1L1M3O1B3I1L1I1T1Y4

4 + 1 + 1 + 1 + 1 + 3 + 1 + 1 + 0 + 3 + 1 + 3 + 1 + 1 + 1 + 1 + 4 =28 PTS

DOUBLE WORD → 56TRIPLE WORD → 84

MEANING

What does vertical mobility mean?