Ligula

Definitions

  • Webster's Revised Unabridged Dictionary
    • Ligula (Zoöl) A tongue-shaped lobe of the parapodia of annelids. See Parapodium.
    • Ligula (Bot) See Ligule.
    • Ligula (Zoöl) The central process, or front edge, of the labium of insects. It sometimes serves as a tongue or proboscis, as in bees.
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Century Dictionary and Cyclopedia
    • n ligula In botany, same as ligule.
    • n ligula In entomology: A fleshy, membranaceous, or horny anterior part of the labium, attached to the inner surface of the mentum, by which it is sometimes entirely concealed; the terminal or distal one of the three component parts of the labium. In the Hymenoptera it is developed into a long tongue-like organ, split into three parts, of which the outer two are called the paraglossæ and the intermediate one the glossa or lingua. (See cut under Hymenoptera.) Sometimes the term ligula is applied to the united palpigers or palpus-bearing lobes of the labium, which cover and conceal the true ligula. In the Coleoptera the ligula is properly the central division of the labium, between the paraglossæ; but, as the latter are often wanting, the term ligula has come to be used synonymously with labium, where the term labium is used as applying only to the anterior division, excluding mentum and submentum. See cut under mouth-parts.
    • n ligula A process on the elytra of certain beetles. See elytral.—
    • n ligula In anatomy, a band of white nervous substance bordering the membranous covering of the posterior part of the fourth ventricle of the brain on each side, and extending from the clava to the striæ acusticæ, where it winds around the restiform bodies. Also called tænia ventriculi quarti, ala pontis, and ponticulus.
    • n ligula [capitalized] A genus of simple cestoid worms, type of the family Ligulidæ, having an unsegmented elongated body with two lateral depressions at the head end, and numerous sets of sexual organs in longitudinal series opening on the median line of the body. These endoparasites inhabit fishes and amphibians, and acquire their matured character in water-birds.
    • n ligula [capitalized] A genus of mollusks.
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Chambers's Twentieth Century Dictionary
    • n Ligula a tongue-like part or organ: in entomology, a fleshy membranaceous or horny anterior part of the labium
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Etymology

Webster's Revised Unabridged Dictionary
L., a little tongue. See Ligule
Chambers's Twentieth Century Dictionary
L. ligula, dim. of lingua, a tongue.

Usage

In literature:

Lamina interna: the ligula.
"Explanation of Terms Used in Entomology" by John. B. Smith
The long sucking "tongue" of bees is probably a modification of the ligula.
"Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 4" by Various
A mixture of gold and silver, which was called electrum, was much used for coinage, and I have met with one or two ligulae of this metal.
"Surgical Instruments in Greek and Roman Times" by John Stewart Milne
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In news:

Donec fermentum ligula at tortor tincidunt rutrum.
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