Most of the terms and techniques were developed or became more commonly known by Stephen LaBerge, and he describes many of them in his book Exploring the World of Lucid Dreaming.
A technique where, as you are falling asleep, suggest to yourself that you will have a lucid dream either that night or in the near future.
CAT– Cycle Adjustment Technique
A technique in which you adjust your sleep cycles to increase the likelihood of having a lucid dream.
DC– Dream character.
Any character that plays out inside your dreams, usually a direct reflection of the sub-conscious. Some people believe they are real people or spirit guides, others that they’re just products of the dreaming mind.
DILD- Dream-Initiated Lucid Dream
A lucid dream that begins during a “normal”, non-lucid dream.
The ability to remember details of one’s dreams.
The result from a reality check that indicates that one is dreaming. Ex: Breathing through your nose while pinching your nostrils.
The landscape and scenery of one’s dreams.
The images, sounds, etc. that you perceive as you fall asleep. Not to be confused with phosphenes.
EILD– Erotically induced lucid dream
A lucid dream with sexual activity. They may trigger a real orgasm, phenomena known as a nocturnal emission or wet dream.
LILD– Letter Induced Lucid Dreaming
The technique in which you do something in a lucid dream that theoretically will remind you that you’re dreaming in your next dream. Remember symbols, letters or other writing within a dream helps train the mind to dream better.
A dream in which you are aware that you are dreaming.
MILD– Mnemonic Induction of Lucid Dreams.
The technique in which you mentally repeat to yourself, as you fall asleep, your future intention to realize that you’re dreaming.
A substance that induces a dreamlike state, namely Vitamins and Herbs.
A skilled lucid dreamer.
OBE– Out of Body Experience
An experience that usually begins with Sleep paralysis in which the subject experiences floating out of the body, many times being able to turn around and see your body lying in bed sleeping.
Patches of color (usually red or blue) that you can constantly see while your eyes are closed.
REM- Rapid Eye Movement
The stage of the sleep cycle that some of your most vivid dreams occur in.
RC- Reality check
A simple and quick method of determining if one is dreaming. Ex: Breathing with your nose shut, faulty light switches, etc.
Real Life result–
A reality check result which indicates one is may not be dreaming. Ex: Being unable to will oneself to fly.
SP- Sleep paralysis
The body’s natural phenomenon of paralyzing the limbs of the body while asleep. This may be experienced consciously, either by accident or during the WILD technique.
VILD- Visual Induction of Lucid Dreams.
The technique in which you incubate a dream that reminds you to do a reality check to become lucid.
VD- Vivid Dream
A dream with a high level of detail and content.
WBTB- Wake Back To Bed
Is a technique in which you wake up after several hours of sleep to increase chances of better dreaming. This can be combined with other techniques. IE Dream herbs, MILD etc.
WILD- Wake Initiated Lucid Dream
A lucid dream triggered by consciously going to bed.
Source: Dream Terminology