• synonyms


[ak-ruh-spahyuh r]
noun Botany.
  1. the first sprout appearing in the germination of grain; the developed plumule of the seed.
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Origin of acrospire

1610–20; acro- + spire1; replacing akerspire, equivalent to aker (Old English æchir ear of grain) + spire
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for acrospire

Historical Examples

  • By about the eighth day of flooring the acrospire should be about three-quarters up the corn.

    Encyclopaedia Britannica, 11th Edition, Volume 17, Slice 4


  • The malting, however, is complete before the acrospire becomes a leaf.

  • As the acrospire creeps along the surface of the seed, the farina within undergoes a remarkable alteration.

British Dictionary definitions for acrospire


  1. the first shoot developing from the plumule of a germinating grain seed
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Word Origin

C17: from obsolete akerspire, from aker ear ² + spire sprout, spire 1; the modern form is influenced by acro-
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012