Definition of mesarch in English:

mesarch

Pronunciation /ˈmɛsɑːk/ /ˈmɛzɑːk/

adjective

  • 1Botany
    Of primary xylem: developing from both the centre of the stem and the periphery, so that the oldest elements (protoxylem) are in the centre of the xylem strand, and maturation of the cells takes place both centrifugally and centripetally.

  • 2Ecology
    Of a succession of plant communities: originating in a mesic or moderately moist habitat.

Origin

Late 19th century; earliest use found in Henry Garnsey (1826–1903).