mesarchy

名词 n.

英文释义

名词 n.
  1. A vascular system in which development spreads both toward and away from the axis center. uncountable
    — There is no doubt, however, that if endarchy is primitive in the protostelic and immediately derived types, it very rapidly gives place to mesarchy and exarchy in response to various demands, and it is not difficult to show how this may have occurred.

词源

From meso- + -archy.
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