Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Having a rounded or obtuse apex with a central shallow notch.

from The Century Dictionary.

  • In botany, obtuse at the apex, with a broad and very shallow sinus reentering: as, a retuse leaf.
  • In zoology, ending in an obtuse sinus.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective (Bot. & Zoöl.) Having the end rounded and slightly indented.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective botany, of a leaf Having a rounded apex with small central notch

Etymologies

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

[Latin retūsus, past participle of retundere, to beat back : re-, re- + tundere, to beat.]

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Examples

  • Dodonaea microzyga, F.M. Somewhat viscid, almost glabrous; leaves with 1 to 2 pairs of small obovate-cuneate leaflets; in front rounded, or truncate, or retuse, or sometimes 3-toothed, flat at the margin; rachis dilated; fruit-bearing pedicels solitary; capsules 3 to 4-celled; valves cymbeo-semiorbicular, all around broadly winged; the wing rounded-blunt on both extremities; dissepiments persistent with the columella.

    The Journals of John McDouall Stuart 2007

  • The _first glume_ is cuneately obovate or obcordate, yellowish with red brown tips or dark brown with yellow tips, chartaceous below, membranous, hyaline and ciliate at the truncate, emarginate or retuse apex, 7 - to 9-nerved, the nerves abruptly ceasing towards the apex.

    A Handbook of Some South Indian Grasses K. Rangachari

  • Dodonaea microzyga, F.M. Somewhat viscid, almost glabrous; leaves with 1 to 2 pairs of small obovate-cuneate leaflets; in front rounded, or truncate, or retuse, or sometimes 3-toothed, flat at the margin; rachis dilated; fruit-bearing pedicels solitary; capsules 3 to 4-celled; valves cymbeo-semiorbicular, all around broadly winged; the wing rounded-blunt on both extremities; dissepiments persistent with the columella.

    Explorations in Australia The Journals of John McDouall Stuart John McDouall Stuart 1840

  • (rarely 5-nerved also); _palea_ is present, and it is hyaline, shorter than the glume, truncate or shallowly retuse, usually barren but occasionally with three stamens.

    A Handbook of Some South Indian Grasses K. Rangachari

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