Tencel is the trademark name for lyocell. Lyocell is a cellulose fabric obtained by an organic solvent spinning process. This fabric is a sub-category of rayon. Found on http://www.herroom.com/glossary-fabric-womens.aspx
A fabric made from the cellulose of wood pulp, then processed into a silk-like fabric that is very soft with great drape. It's usually a medium weight fabric that can be easily dyed and cared for. Found on https://www.encyclo.co.uk/local/22120
Tencel is a fabric made from wood pulp and produced with a recyclable non-toxic dissolving agent. Tencel is soft and drapey and often combined with other fibres in both knits and wovens. It is comfortable to wear, behaving very much like cotton without as much wrinkling. It does wrinkle however, and does not make a great travel garment. Found on https://www.encyclo.co.uk/local/22260
[Fabrics] A trademark of Courtaulds for a high performance fiber used to make soft, beautifully draping rayon fabrics. Tencel is made from wood pulp that is harvested from replenished tree farms. So it's environmentally sensitive and it's washable! Found on https://www.encyclo.co.uk/local/23219