MDMA is the technical 'word' for Extasy or 3,4-methylenedioxymethamphetamine.

MDMA
(C11H15NO2)
(methylenedioxy-n-methylamphetamine)

DESCRIPTION
MDMA, or 'ecstasy' is a 'psychedelic amphetamine' that has gained popularity over the past 20 years because of its ability to produce strong feelings of comfort, empathy, and connection to others. It most frequently comes in tablet form, although it is occasionally sold in capsules or as powder. It is most frequently used orally and rarely snorted. MDMA use is closely tied to the underground rave (and dance club) scene throughout the world, but has also been widely used by therapists as an adjunct to psychotherapy.

Because MDMA is so popular and because it goes well with dance parties, the demand for it usually exceeds supply--especially at any given location on any given night. This creates an opening for unscrupulous individuals to sell virtually anything as 'ecstasy'. While 'ecstasy' is the popular name for MDMA, the functional definition of ecstasy is any pill represented as MDMA on the street. Ecstasy pills are notoriously unreliable in content, more so than most other street drugs, and commonly contain either caffeine, ephedrine, amphetamines, MDA, MDE, DXM, or--in rare cases--DOB, and don't necessarily contain MDMA or any psychoactive. This problem has led to the development of simple MDMA testing kits that may help give the user a general sense of the content of a pill.

Dose
A standard oral dose of MDMA is between 80 - 150 mg. Most good quality pills contain somewhere in this range, ge...

MDMA - Methylenedioxymethamphetamine
A pure, powder form of Ecstasy
Generally taken orally, by "dabbing" or "bombing".
Makes the user unimaginably happy, gives everlasting energy and makes music sound amazing
Was used in medicine untill the US goverment overuled the courts judgment that MDMA was safe enough when used responsibly

MDMA is the technical 'word' for Extasy or 3,4-methylenedioxymethamphetamine.

Phenethylamines>PsychedelicAmphetamines:
3,4-methylenedioxy-N-methylamphetamine, C11H15NO2 (mol. wt. 193.24)
or ecstasy

A clubbers drug... Giving that loved up feeling.

MDMA is Ecstasy, but in the form of a power as opposed to a pill. The content of Ecstasy pills are not consistent and can have anything in them, such as baking powder and talcum powder, as well as other drugs like Speed.
Street names for MDMA include MD, and MAD DOG.

MDMA is around 80% pure, Whereas Ecstasy is about 5% pure!

In Britain, MDMA is becoming more popular as people see it as a purer form of Exctasy.
It is generally bought in powder form in wraps and is snorted in the same way as cocaine. Because of its supposed purity it is more expensive than pills but it is just as likely to be cut with other substances, eg. Talcum Powder. Do you want to pay £15-£20 a gram for Talcum powder?
As a fairly new and increasingly popular drug there is little quality control (whereas with weed for instance, people expect a certain standard and dealers have to match it). It is likely that at each stage of dealership something has been cut into it, so I would advise anyone dabbling in MDMA to be cautious of being given a bum deal - or a seriously deadly concoction.