from The Century Dictionary.

  • noun In botany, the folding or configuration of a single part in a leaf- or flowerbud: opposed to vernation and estivation, the disposition of the parts conjointly.

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

  • noun (Bot.) The way in which a leaf is sometimes folded in the bud.

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

  • noun botany The way in which an individual leaf is folded in the bud.


from Wiktionary, Creative Commons Attribution/Share-Alike License

From New Latin ptyxis, from Ancient Greek πτύξις (ptuksis, "a folding")


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  • 1880 GRAY Struct. Bot. (ed. 6) 132 note, coming into use as a general term for the folding, etc., of single parts. Ibid. 133 The Ptyxis (or folding) of an individual leaf...should be distinguished from the arrangement in the bud of the leaves of a circle or spiral in respect to each other.

    February 2, 2007

  • This is *so close* to being on the And Sometimes Y list.

    So close...

    February 2, 2007