labrum

¹

[ ley-bruhm, lab-ruhm ]

noun

, plural la·bra [ley, -br, uh, lab, -r, uh].

1. a lip or liplike part.
2. Zoology.
   1. the anterior, unpaired member of the mouthparts of an arthropod, projecting in front of the mouth.
   2. the outer margin of the aperture of a shell of a gastropod.
3. Anatomy. a ring of cartilage about the edge of a joint surface of a bone.

labrum

²

[ ley-bruhm ]

noun

, Archaeology.

, plural la·bra [ley, -br, uh].

1. an ornamented bathtub of ancient Rome.

labrum

/ ˈlæb-; ˈleɪbrəm /

noun

1. a lip or liplike part, such as the cuticular plate forming the upper lip of insects

Word History and Origins

Origin of labrum¹

1810–20; < Latin: lip; akin to labium

Origin of labrum²

< Latin lābrum basin, contraction of lavābrum bathtub, equivalent to lavā ( re ) to wash + -brum instrumental suffix

Word History and Origins

Origin of labrum¹

C19: New Latin, from Latin

Example Sentences

Labrum semicirculare margine antico integro rotundato ciliato.

From Project Gutenberg

Labrum transverso-quadratum antice submembranaceum tomentosum subemarginatum.

From Project Gutenberg

A corneous piece which covers the instruments of suction above, representing the Labrum in a perfect mouth.

From Project Gutenberg

A small valve under the Labrum, that in many Hymenoptera closes the Pharynx, and is an appendage of its upper margin.

From Project Gutenberg

It includes all the parts that lie between its junction with the Prothorax and the Labrum: viz.

From Project Gutenberg

Related Words

• rim