peridermPronunciation: /ˈpɛrɪdəːm/Definition of periderm noun [mass noun] Botany the corky outer layer of a plant stem formed in secondary thickening or as a response to injury or infection. Derivatives peridermalPronunciation: /pɛrɪˈdəːm(ə)l/ adjective Origin: mid 19th century: from peri- 'around' + Greek derma 'skin'periderm in other Oxford dictionaries Definition of periderm in the US English dictionary
