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n. pl. la·bel·la (-bĕl′ə)
1. The median petal of an orchid flower, usually different in shape, size, or color from the two lateral petals; lip.
2. A liplike part, such as the tip of the labium of certain flies, used for lapping up liquids.

[Latin, diminutive of labrum, lip; see leb- in Indo-European roots.]

la·bel′late (-ĭt) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


n, pl -la (-lə)
1. (Botany) the part of the corolla of certain plants, esp orchids, that forms a distinct, often lobed, lip
2. (Zoology) a lobe at the tip of the proboscis of a fly
[C19: New Latin, diminutive of Latin labrum lip]
laˈbelloid adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ləˈbɛl əm)

n., pl. -bel•la (-ˈbɛl ə)
the lowest of the three orchid petals, usu. larger and more conspicuous than the others; the lip.
[1820–30; < Latin, diminutive of labrum lip]
la•bel′loid, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
It has elongating pseudostem and inflorescence, absence of involucre sterile bracts, and broad yellow and white labellum with small red markings (the most common characteristic).
Similar to Amomum durum by its large, showy and thick wall fruit, differ by its labellum and anther crest of the flower.
ovatilabium differs from the nominate form by its large egg-shaped labellum. This variety occurs in the mountains of Benguet and Pampanga on Luzon; and on the island of Mindoro.
The structure of the labellum is one of Mother Nature's true wonders.
lanuginose), odorless flowers and proportionately longer, narrower labellum with bright green to lemon-yellow, narrow throat with straight sides (vs.
This study was therefore conducted to describe variations in the flowers of Mokara with emphasis on the shapes of sepals, petals and labellum using geometric morphometric (GM) methods based on summarized information about contours of the structures.
Bees land on the brightly colored lip or labellum of the rose pogonia flower.
The flower has a large, sack-like labellum with a longitudinal slit on its upper surface.
The most obvious feature of these flowers is the labellum, which is quite large and in some species of quite intricate construction.
Also, the proportions of the labellum in taxa of the complex are distinctive, since the central lobe width and the length across the spread lateral lobes are of about the same dimensions (Fig.
The labellum of Euanthe lacks a spur; whereas all true Vanda species have a spur.