vertical combination

NOUN /vɜrtɪkəl_,kɑmbə'neɪʃən/
20 LETTERS · STARTS WITH V

vertical combination is a valid 20-letter word worth 30 points in Scrabble and 38 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
V4E1R1T1I1C3A1L1C3O1M3B3I1N1A1T1I1O1N1
4 + 1 + 1 + 1 + 1 + 3 + 1 + 1 + 0 + 3 + 1 + 3 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 1 =30 PTS
DOUBLE WORD → 60TRIPLE WORD → 90
MEANING

What does vertical combination mean?

NOUN · 1 SENSE
1

Absorption into a single firm of several firms involved in all aspects of a product's manufacture from raw materials to distribution.