Dr. Cruz referred the patient either to the lab doing the testing or to another doctor. Presumable, the other doctor then referred the patient for lab tests, but as this is fiction, it is equally possible the other doctor was a scientific researcher who worked in/owned a research lab. Since Dr. Cruz referred the patient, he was the referring doctor.
â¢ SURFACE TENSION (noun). The noun SURFACE TENSION has 1 sense: 1. a phenomenon at the surface of a liquid caused by intermolecular forces. Familiarity information: SURFACE TENSION used as a noun is very rare.
This is what creates the force known as surface tension. The water molecules at the surface of the water do not want to move up, away from other water molecules to which they are attracted. This gives plain old water a high surface tension. In fact, it's too high to allow big bubbles to form.