labellum

labellum

[luh-bel-uhm]
noun, plural labella [luh-bel-uh] . Botany.
the petal of an orchid that differs more or less markedly from the other petals, often forming the most conspicuous part; the lip.

Origin:
1820–30; < Latin, diminutive of labrum lip; for formation see castellum

labelloid, adjective
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World English Dictionary
labellum (ləˈbɛləm)
 
n , pl -la
1.  the part of the corolla of certain plants, esp orchids, that forms a distinct, often lobed, lip
2.  a lobe at the tip of the proboscis of a fly
 
[C19: New Latin, diminutive of Latin labrum lip]
 
la'belloid
 
adj

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