rachis

noun ra·chis \ ˈrā-kəs , ˈra- \

Definition of rachis

plural rachises also rachides play \ˈra-kə-ˌdēz, ˈrā-\
1 :an axial structure: such as
a (1) :the elongated axis of an inflorescence
(2) :an extension of the petiole of a compound leaf that bears the leaflets
b :the distal part of the shaft of a feather that bears the web

Origin and Etymology of rachis

New Latin rachid-, rachis, from Greek rhachis; akin to Greek rhachos thorn, Lithuanian ražas dry twig, tine


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