For those who are interested, I came across this word in a novel called "The House of Doctor Dee" by Peter Ackroyd.

Chapter 4 page 123:

But what kind of 'recipe' was this?

So that it may grow without the help of any womb! This is the secret of all secrets, and must remain so until that time of the end when all secrets will be revealed. Let the spagyricus take the seed and place it within a sealed glass, for preference the glass of Antwerp in which all light and heat seem to prosper.

Bingley

Bingley