From peri- + radicular.
periradicular (not comparable)
- Surrounding a root or radicle
2015, R. Praveen et al., “The radiculous’ premolars: Case reports of a maxillary and mandibular premolar with three canals”, in Journal of Natural Science, Biology, and Medicine[1], volume 6, →DOI:A diagnosis of necrotic pulp with chronic periradicular abscess was made.