refer

Known as a tetraplex digital PCR assay, this method of testing allows researchers to use water or soil samples for rapid and precise identification of Burmese pythons, northern African pythons, boa constrictors and rainbow boas from environmental DNA -- which scientists refer to as eDNA -- collected in the wild.

However, the concept of mutual exclusivity has never been airtight: Words like "bat" refer to multiple kinds of objects, while any object can be described using countlessly many words.

Linguists use the term "focus" to refer to the way we emphasize or stress certain words to signal some kind of contrast.

In the first version, "blicket" and "toy" plausibly refer to the same object.

But when hearing the new word spoken with focus, they thought it must refer to a new object 87 percent of the time.