Brazilian Jiu-Jitsu

Brazilian jiu-jitsu (/dʒuːˈdʒɪtsuː/; Portuguese: [ˈʒiw ˈʒitsu], [ˈʒu ˈʒitsu], [dʒiˈu dʒiˈtsu]) ('BJJ, or Brazilian Jiu-Jitsu) is a martial art, combat sport, and a self defense system that focuses on grappling and especially ground fighting. Brazilian jiu-jitsu was formed from Kodokan Judo ground fighting (Ne-Waza) fundamentals that were taught to Carlos Gracie by master Mitsuyo Maeda. Brazilian jiu-jitsu eventually came to be its own art through the experimentations, practices, and adaptation from the Judo knowledge of Carlos and Helio Gracie, who then passed their knowledge onto their family.
BJJ promotes the concept that a smaller, weaker person can successfully defend against a bigger, stronger assailant by using leverage and proper technique, taking the fight to the ground – most notably by applying joint-locks and chokeholds to defeat the other person. BJJ training can be used for sport grappling tournaments (gi and no-gi) and mixed martial arts (MMA) competition or self-defense. Sparring (commonly referred to as "rolling") and live drilling play a major role in training, and a premium is placed on performance, especially in competition, in relation to progress and ascension through its ranking system.
Since its inception in 1914, its parent art of Judo was separated from older systems of Japanese ju-jitsu by an important difference that was passed on to Brazilian jiu-jitsu: it is not solely a martial art: it is also a sport; a method for promoting physical fitness and building character in young people; and, ultimately, a way (Do) of life.

Origins:

Mitsuyo Maeda, was one of five of the Kodokan's top groundwork (Ne - Waza) experts that judo's founder Kano Jigoro sent overseas to demonstrate and spread his art to the world. Maeda had trained first in sumo as a teenager, and after the interest generated by stories about the success of Kodokan Judo at contests between Kodokan Judo and jujutsu that were occurring at the time, he changed from sumo to Judo, becoming a student of Jigoro Kano. Maeda left Japan in 1904 and visited a number of countries giving "jiu-do" demonstrations and accepting challenges from wrestlers, boxers, savate fighters and various other martial artists before eventually arriving in Brazil on November 14, 1914.
Gastão Gracie was a business partner of the American Circus in Belém. In 1916, Italian Argentine circus Queirolo Brothers staged shows there and presented Mayeda. In 1917, Carlos Gracie, the eldest son of Gastão Gracie, watched a demonstration by Maeda at the Da Paz Theatre and decided to learn judo. Maeda accepted Carlos as a student and Carlos learned for a few years, eventually passing his knowledge on to his brothers.
At age fourteen, Hélio Gracie, the youngest of the brothers, moved in with his older brothers who lived and taught traditional Japanese jiu-jitsu in a house in Botafogo. Following a doctor's recommendations, Hélio would spend the next few years being limited to watching his brothers teach as he was naturally frail. Over time, Hélio Gracie gradually developed Gracie Jiu Jitsu as a softer, pragmatic adaptation from Judo, as he was unable to perform many Judo moves that require direct opposition to an opponent's strength. Through the years Helio Gracie developed a system that focused on ground fighting, as opposed to Judo which emphasizes throwing techniques. Years later Helio Gracie Challenged Judo's legend Masahiko Kimura. According to Kimura in his book "My Judo", He thought of Hélio Gracie to be a 6th dan judo at the time of his fight with him in 1951. However, there is no Kodokan record of Hélio Gracie having any dan grade in judo, but it is not unusual for a foreign judoka's actual grade to be higher than that officially granted and recorded by the Kodokan, as Kodokan ranks are maintained independently and have much more strict requirements.
Although Brazilian jiu-jitsu is largely identified with the Gracie family, there is also another prominent lineage from Maeda via another Brazilian disciple, Luis França. This lineage had been represented particularly by Oswaldo Fadda. Fadda and his students were famous for influential use of footlocks and the lineage still survives through Fadda's links with today's teams such as Nova União and Grappling Fight Team.

Name:
"Jiu-jitsu" is an older romanization that was the original spelling of the art in the West, and it is still in common use, whereas the modern Hepburn romanization is "jūjutsu."
When Maeda left Japan, judo was still often referred to as "Kano jiu-jitsu", or, even more generically, simply as "jiu-jitsu." Higashi, the co-author of "Kano Jiu-Jitsu" wrote in the foreword:
"Some confusion has arisen over the employment of the term 'jiudo'. To make the matter clear I will state that jiudo is the term selected by Professor Kano as describing his system more accurately than jiu-jitsu does. Professor Kano is one of the leading educators of Japan, and it is natural that he should cast about for the technical word that would most accurately describe his system. But the Japanese people generally still cling to the more popular nomenclature and call it jiu-jitsu."
Outside Japan, however, this distinction was noted even less. Thus, when Maeda and Satake arrived in Brazil in 1914, every newspaper announced their art as being "jiu-jitsu" despite both men being Kodokan judoka.
It was not until 1925 that the Japanese government itself officially mandated that the correct name for the martial art taught in the Japanese public schools should be "judo" rather than "jujutsu." In Brazil, the art is still called "jiu-jitsu". When the Gracies went to the United States to spread their art, they used the terms "Brazilian jiu-jitsu" and "Gracie Jiu-Jitsu" to differentiate from the already present styles using similar-sounding names.
The art is sometimes referred to as Gracie Jiu-Jitsu (GJJ), this name was trademarked by Rorion Gracie, but after a legal dispute with his cousin Carley Gracie, his trademark to the name was voided. Other members of the Gracie family often call their style by personalized names, such as Charles Gracie Jiu-Jitsu or Renzo Gracie Jiu-Jitsu, and similarly, the Machado family call their style Machado Jiu-Jitsu (MJJ). While each style and its instructors have their own unique aspects, they are all basic variations of Brazilian jiu-jitsu. Today there are four major branches of BJJ from Brazil: Gracie Humaita, Gracie Barra, Carlson Gracie Jiu-Jitsu and Alliance Jiu Jitsu. Each branch can trace its roots back to Mitsuyo Maeda and the Gracie family.
More recently, the name "jitz" for the art has been gaining currency as a casual layman's term, especially in the USA.