• Webster's Revised Unabridged Dictionary
    • n Acrospire (Bot) The sprout at the end of a seed when it begins to germinate; the plumule in germination; -- so called from its spiral form.
    • v. i Acrospire To put forth the first sprout.
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Century Dictionary and Cyclopedia
    • n acrospire The first leaf which rises above the ground in the germination of grain; also the rudimentary stem or first leaf which appears in malted grain; the developed plumule of the seed.
    • acrospire To throw out the first leaf; sprout.
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Chambers's Twentieth Century Dictionary
    • n Acrospire ak′ro-spīr (bot.) the first leaf that appears when corn sprouts.
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Webster's Revised Unabridged Dictionary
Gr. + anything twisted
Chambers's Twentieth Century Dictionary
Gr. akros, summit, end, speira, anything twisted round.