perimeristem
/ˌpɛrɪˈmɛrɪstɛm/Botany rare
noun
The outermost layer of an apical meristem, which develops into the outer cortex and dermatogen.
Origin
Late 19th century; earliest use found in Frederic Bower (1855–1948), botanist. From peri- + meristem, after German Perimeristem.