labraladj.
/ˈleɪbr(ə)l/, /ˈlabr(ə)l/, U.S. /ˈleɪbrəl/, /ˈlæbrəl/ Chiefly Zoology.
Of or relating to a labrum, esp. that of an insect or other arthropod (cf. labrum n.1 2).
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labral1838
1838 Trans. Royal Entomol. Soc. 2 92 The labrum and labral palpi.
1877 T. H. Huxley Man. Anat. Invertebrated Animals vi. 259 A suture..connected with the labral suture by one or two sutures.
1924 Philos. Trans. (Royal Soc.) B. 212 398 Floating food particles would be sucked into the mouth region, where they would become entangled in the labral gland secretion.
1961 Jrnl. Kansas Entomol. Soc. 34 192 The female of X[ylocopa] viridigastra is readily distinguished..by the number and disposition of the labral tubercles.
1982 D. E. Bignell in W. J. Bell & K. G. Adiyodi Amer. Cockroach iv. 67 Both the cibarial and pharyngeal musculature are innervated from the frontal ganglion and labral nerves.
2006 Guardian 16 Mar. (G2 section) 27/2 Problems can also occur from tears of the labrum... A labral tear may be degenerative or traumatic.
This entry has been updated (OED Third Edition, March 2017; most recently modified version published online March 2022).
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adj.1838