A guided meditation can incorporate guided imagery, visualization and relaxation.

There are several ways I use guided meditation and guided imagery in my work:

My hypnotherapy sessions incoporate these, as well as positive suggestion.

I offer guided meditations with all of these to groups and at events.

I also offer guided meditation in combination with other modalities, for example, reflexology (The Deepest Relaxation)

Here are some definitions for visualization on the web:

• visual image: a mental image that is similar to a visual perception
  
  
• Visualization is any technique for creating images, diagrams, or animations to communicate a message. Visualization through visual imagery has been an effective way to communicate both abstract and concrete ideas since the dawn of man.
  
  
• The act of visualizing, or something visualized; The visual representation of data
  
  
• visualize - imagine; conceive of; see in one's mind; "I can't see him on horseback!"; "I can see what will happen"; "I can see a risk in this strategy.

• visualize - form a mental picture of something that is invisible or abstract; "Mathematicians often visualize"

• visualized - envisioned: seen in the mind as a mental image; "the glory of his envisioned future"; "the snow-covered Alps pictured in her imagination".
  
• visualize - To form a mental image or vision; to imagine.
  
  

Here are some definitions of guided imagery on the web:

• A technique that involves using the imagination and mental images to promote relaxation, changes in attitude or behavior, and encourages physical healing. Also known as visualization.

• Guided imagery is a gentle but powerful technique that focuses and directs the imagination
  
  
• a relaxation technique in which a person visualizes or imagines things suggested to them by a recording or counselor.
  
  
• This relaxation and stress-reduction technique uses positive thoughts and images to relieve pain, slow the heart rate, and stimulate the body's healing responses.

• it involves the whole body, the emotions and all the senses, and it is precisely this body-based focus that makes for its powerful impact.
  
  
• an alternative medicine therapy in which the patient uses positive visualizations and thoughts to aid healing and promote reduction in anxiety or pain.
  
  
• Harnessing the imagination to create a “construct of reality” can give us powerful yet gentle insight into our unconscious mind.
  
  
• Guided Imagery uses the power of the mind to bring about healing. It is in the body-mind where we hold perceptions of the past, in the form of emotions and images. Our beliefs are different because our perceptions of the past are unique.
  
  
• Guided Imagery is both a mental process (as in imagining) and a wide variety of procedures used in therapy to encourage changes in attitudes.
  
  
• Also known as guided meditation, the student or subject is asked to visualize scenes in a sequence.
  
  
• Using one's own conscious or preconscious, attention can be directed toward a specific goal such as pain of a behavioural problem, by means of imagery or an actual mechanism such as words, sounds, symbolics (the representation of things (diseases, feelings) by symbols or scents. 

• Guided imagery is probably best known for its direct effects on physiology. Through imagery, an individual attempts to stimulate changes in body functions usually considered inaccessible to conscious influence.