Doctor of Laws
Legum Doctor (English: Doctor of Laws; abbreviated to LL.D.) In the UK and Canada the LL.D. is a doctorate usually awarded on the basis of exceptionally insightful and distinctive publications, containing significant and original contributions to the science or study of law. The LL.D. may also be awarded as an honorary degree based upon a person's contributions to society. Some universities, such as the University of Oxford, award a Doctor of Civil Law instead.
In the USA, the Doctor of Juridical Science (J.S.D.) is awarded instead of the LL.D. It is awarded for research in the form of a dissertation. It is seen as equivalent to a Doctor of Philosophy. In the USA the LL.D.is almost always an honorary degree.
Plural abbreviations in Latin are formed by doubling the letter, hence the double "L".