The Medium definition or the Medium meaning, is a person who is psychic and has the added ability to communicate with spirits, also known as a Spiritual Medium. Spirits are our loved ones, friends or people who have passed over and are in the spirit world, or the afterlife. A Psychic Medium can connect with spirits in different ways, some may ‘hear’ their voices and the messages they put forward, those with Clairvoyance abilities may be able to ‘see’ usually in their mind’s eye – spirit often give descriptive evidence to the Medium of what they physically look like or a sense of who they were physically and emotionally.
Open readings address the larger aspects of your life rather than a specific problem area or question. They're usually done when you're entering a new phase of life, such as getting married, graduating from college or starting a family. You can somewhat direct the reading if you have a general area you want to cover, such as your career or health, but that's as specific as the direction gets.
Theosophy is in opposition to the spiritualist interpretation of evolution. Theosophy teaches a metaphysical theory of evolution mixed with human devolution. Spiritualists do not accept the devolution of the theosophists. To theosophy humanity starts in a state of perfection (see Golden age) and falls into a process of progressive materialization (devolution), developing the mind and losing the spiritual consciousness. After the gathering of experience and growth through repeated reincarnations humanity will regain the original spiritual state, which is now one of self-conscious perfection. Theosophy and spiritualism were both very popular metaphysical schools of thought especially in the early 20th century and thus were always clashing in their different beliefs. Madame Blavatsky was critical of spiritualism; she distanced theosophy from spiritualism as far as she could and allied herself with eastern occultism.