Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A protective sheath enclosing the shoot tip and embryonic leaves of grasses.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A pointed sheath that protects the emerging shoot in monocotyledons such as oats and grasses.

from The Century Dictionary and Cyclopedia

  • n. Same as coleophyl.

Etymologies

From New Latin coleoptilum : Greek koleon, sheath; see kel-1 in Indo-European roots + Greek ptilon, plume; see pet- in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Based on Ancient Greek κολεός (koleos, "sheath") + πτίλον (ptilon, "feather"). (Wiktionary)

Examples

  • (B) Effect of BL on coleoptile and root elongation in XA21 and BiP3 ox/XA21 seedlings.

    PLoS ONE Alerts: New Articles

  • (B) Effect of BL on coleoptile and root elongation in Kit and BiP3 ox seedlings.

    PLoS ONE Alerts: New Articles

  • One problem a grower can encounter with planting early is that the soil is too warm, which can keep the coleoptile from extending, the agronomist said.

    High Plains Journal

  • Action actinomycin D auxin-induced growth Avena coleoptile section

    xml's Blinklist.com

  • Activation of Avena coleoptile cell wall glycosidases by hydrogen ions and auxin

    xml's Blinklist.com

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