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(Biology) bent or curved downwards: a decurved bill; decurved petals.
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014



curved downward.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.decurved - bent down or curved downward; "the decurved bill of a curlew"
retrorse - bent or curved backward or downward; "leaves with retrorse barbs"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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References in periodicals archive ?
It is a small, almost mouselike bird about 18 cm long and with a slender, slightly decurved bill.
The scarlet honeycreeper ('i'iwi) uses its long decurved bill to feed on nectar.
Produced rearward in the midline, tapering and decurving, its tip is coarctate, i.e., swollen distad [as noted by both Bolivar (1888) and Redtenbacher (1891)]; it ends in a strong decurved spine in all 3 species (Figs 3, 4).
Pileus 12-24 mm, convex to broadly convex, slightly umbonate, surface smooth glabrous, wet when fresh, dark brown (7F4) to brown (7E4) on mature basidiomata, margin decurved with abundant white velar remnants.
It was probing for food in the mud with its long decurved bill in the company of the endemic Philippine Duck Anas luzonica and Common Moorhen Gallinula chloropus.
Mouth hook (MH) sclerified, hook strong, sharp, irregularly decurved line, apex portion abruptly turned in ventral direction; three slightly dark, shared and decurved teeth (At) below the hook; mouth hook body with one small foramen; one small and strong mid-dorsal projection; two posterior projections, thicker dorsal one more elongated than the ventral projection.
Pileus 6.2-7.5 cm in diameter, plano-convex, obtuse broad umbo with depressed circular zone around, vinaceos red, orange buff, pinkish buff in an irregular pattern, surface smooth, viscid to semi viscid when wet, margins entire to minutely dentate, decurved, pale brown.
Larger races of Dunlin also have a decurved bill, so it's worth a double-check if you think you've found one.
When I first shot one, I marveled at the slender, decurved bill.
The strongly decurved snout, subinferior mouth, and transverse anterior lower jaw dental arcade, are shared with Mazarunia, as is also a laminar expansion of epibranchial 1 associated with the pharyngobranchiad 2 arm (character 7 in Kullander 1998).
Using identification criteria in Pyle (1997), we eliminated the similar Vaux's swift (Chaetura vauxi) based on the decurved culmen, depth of bill of 2.35 mm, and an unflattened wing that was 122 mm in length.
complanata has multiple decurved thin flower spikes emanating laterally from the axils of the leaves.