primacy

the state of being first in importance

The primacy of Apple Computers is not guaranteed, as seen in the recent lawsuits and weak growth.

(the term primacy refers to primary, as opposed to exclusive, responsibility for a program).

While windows may continue to be the primary desktop platform in the near-term, this primacy is by no means guaranteed in the long-term, and Microdoft knows this as well as anyone.

Note that you can build your GRE vocabulary via Vocab Assistant app hosted in facebook messenger.