Why Physic?

“I first came across this word when working in London and my boss (Sir Keith Peters) was appointed by Her Majesty The Queen as the Regius Professor of Physic at Cambridge University.
Regius Professors were established by Henry VIII in 1540.”
Dr. A Leslie Fisher

Physic describes the garden that has medicinal plants.

In London there is Chelsea Physic Garden. 

Cambridge connections:

The Regius Professor of Physic

Regius Professor of Physic (Wikipedia)