1. To form a corporation; in business.
2. To include or contain; have as a component; SYN. contain, comprise.
3. To unite or merge with something already in existence;

To mix together, or to fuse together -- especially said of groups or companies

ETYM Pref. sub- + Latin sumere to take.
1. To consider (an instance of something) as part of a general rule or principle; SYN. colligate.
2. To contain or include.
3. Include within a larger entity or under a broader heading.