Using his definition, how many days forward can I survive?

It can get a bit complex when we use other definitions.

But here we will use the definition above, without the minus sign.

These words can be confusing since not everyone uses the same definition.

In this case scientists use the definition you have cited.

When researchers study gossip, they don't all use the same definition.

One is that the tire companies use different definitions for the claims.

Various legal systems and government agencies use different definitions of "terrorism".

In 2003, it was redefined as using the 1966 definition.

Various legal systems and government agencies use different definitions of terrorism in their national legislation.