I could find the defination of Essential oil in dictionary, but I couldn't find those of :
Bio Dynamic oil
cold pressed oil
hot pressed oil
Can you help.
Tks / ju
Biodynamics is something invented by Rudolf Steiner (who also developed the first Waldorf school). I think the term has also been picked up by other 'new age' movements and can mean various things. For example, here is a quote from an aromatherapy site: The plant material used to distill a biodynamic oil has been intentionally exposed to cosmic and planetary influences, soil high in microorganisms, ...
For a discussion of cold-pressed oils, you could go to this site: What is Cold Pressed Oil?
where I assume you will also learn about hot pressed oils, expeller pressed oils and who knows what else?