• WordNet 3.6
    • adj petaloid resembling a flower petal
    • ***
Webster's Revised Unabridged Dictionary
    • a Petaloid (Bot) Petaline.
    • ***
Century Dictionary and Cyclopedia
    • petaloid In botany, having the form of a petal; resembling petals in texture and color, as certain bracts.
    • petaloid In zoology, resembling a leaf or petal; specifically, noting those heterogeneous ambulacra of some echinoderms, as of the Clypeastroida, of which the apical part is wide in the middle and tapers to a point at the margin, where it joins the oral portion. See cuts under ambulacrum, cake-urchin, and petalostichous.
    • petaloid Having the general form of a leaf.
    • ***
Chambers's Twentieth Century Dictionary
    • adj Petaloid having the form of a petal—also Petaloi′deous
    • ***


Webster's Revised Unabridged Dictionary
Petal, + -oid,: cf. F. pétaloïde,
Chambers's Twentieth Century Dictionary
Gr. petalon, a leaf.


In literature:

Within this petaloid perianth is a membranous one, together with a boat-shaped bracteolate body, entire.
"Journals of Travels in Assam, Burma, Bhootan, Afghanistan and TheNeighbouring Countries" by William Griffith
Pistil with cluster of stamens, petaloid scale, petal, and sepal.
"Handbook of the Trees of New England" by Lorin Low Dame
Petaloid coloration of the ordinary leaves, or of the bracts, is mentioned under the chapter relating to colour.
"Vegetable Teratology" by Maxwell T. Masters
A cyathium without petaloid glandular appendages.
"Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 8" by Various
Sepals somewhat petaloid or none.
"The Manual of the Botany of the Northern United States" by Asa Gray
Pistil with petaloid stigmas.
"Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 7" by Various
Flower, with two petals, petaloid scales and stamens removed, enlarged.
"Michigan Trees" by Charles Herbert Otis