The Syntax of Roots and the Roots of Syntax is a collection of thirteen papers from two workshops, held at the University of Southern California (20-21 February 2009) and the University of Stuttgart (10-12 June 2009). Edited by Artemis Alexiadou, Hagit Borer and Florian Schäfer, this volume starts with an introduction by the editors, discussing the morphological concept 'root' from several perspectives in generative linguistics and outlining the themes addressed by the volume, in particular the relation between the syntactic and semantic properties of roots. These properties of roots and other word parts fall only within the scope of Minimalist syntax; outside Minimalism, it is different. For example, cartographic syntax (Maximalism) is word-based, and more precisely, featurebased, that is words in the lexicon could be seen as particular combinations of features (see Mao & Meng 2016: 921-924). This volume, in our view, is not intended to produce a ready-made answer to the question of what defines a root, but to bring together various views on the syntactic and semantic properties of roots. More specifically, when addressing the relation between syntactic structure and syntactic terminals, i.e. 'word-like elements but not words' (Berwick & Chomsky 2016: 90), the papers mainly explore the syntactic and semantic properties of roots with a focus on the following three aspects: (i) the isolated syntactic properties of roots; (ii) the interaction of root ontology (semantic properties) with the syntax of roots; and (iii) the interaction of roots with 'phases', sequences of operations resulting in vP or CP-like structures.