The aim of this study was to develop an understanding of how assistive technology (AT) contributes to self-perceived participation for individuals with spinal cord injuries and to propose a revised definition of AT in light of the findings. A grounded theory study of 19 adults with spinal cord injuries was conducted. Participants engaged in individual in-depth interviews and took photographs of the role of AT in their own environments. Analysis consisted of an inductive process of constant comparison. Participants attended a follow-up focus group intended to verify and contribute to the credibility of the findings. The primary theme identified was AT as a means to participation. Three categories served to identify the decision-making processes that individuals underwent to select AT that would promote positive participation experiences: inclusion versus autonomy and accomplishment, availability and cost and contexts of use. A new definition of AT was proposed; this definition identifies AT as a means to enable occupation, emphasizes the relevance of the environment and highlights the importance placed on self-perceived participation. AT recommendations must be based on a thorough understanding of the role that AT plays in the lives of clients. Future research will further develop and validate the definition proposed in this study.