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Definitions

rachis

[rey-kis] / ˈreɪ kɪs /
NOUN
spinal column
Synonyms




Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“The thickness of the rachis in some specimens is 3 microns thick. That’s less than the size of the average cell,” O’Connor says.

From Science Magazine

It had a magenta rachis down the center with soft green vanes that shimmered yellow and purple and blue depending on how you turned it.

From Literature

But this specimen lacked the rachis; it just had barbs and barbules down its ribbonlike tail.

From New York Times

Their structure suggests that the two finest tiers of branching in modern feathers, known as barbs and barbules, arose before the rachis formed.

From BBC

Fruit.—Fleshy, coalescent and sunk in the rachis.

From Project Gutenberg