ac·​ro·​spire | \ ˈa-krə-ˌspī(-ə)r \
plural -s

Definition of acrospire

: the spiral plumule in a germinating grain

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First Known Use of acrospire

1675, in the meaning defined above

History and Etymology for acrospire

alteration (influenced by acr-) of earlier akerspire, acherspire, from English dialect aker, acher ear of grain (from Old English æhher, æcher, ēar) + spire (sprout, blade of grass) (spike of grain)

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The first known use of acrospire was in 1675

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Cite this Entry

“Acrospire.” Dictionary, Merriam-Webster, Accessed 28 Sep. 2020.

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