Lymphocyte see plasmatocyte

lyocytosis n. [Gr. lyein, to loose; kytos, hollow] The process of histolysis by extracellular digestion.

Lyonnet's glands (ARTHRO: Insecta) In Lepidoptera, paired accessory glands opening by a separate duct into the silk gland on its own side; Filippi's glands.

lyra n. [L. lyra, lyre] (ARTHRO: Chelicerata) Stridulating organs of arachnids found on various places of the male body; they consist of a tooth (or teeth) that rubs against a series of ridges.

lyrate a. [L. lyra, lyre] Lyre-shaped; spatulate and oblong with small lobes toward the base.

lyre n. [L. lyra, lyre] (ARTHRO: Insecta) In caterpillars, the border or upper wall of the spinning tube.

lyre-shaped Like a string musical instrument with two curved arms and strings attached to a yolk between the curved arms.

lyrifissure n. [L. lyra, lyre; fissura, crack] (ARTHRO: Chelicer-ata) Small fissures or pores in the cuticle of the body or appendages; sometimes with an internal channel; thought to be stretch receptors.

lyriform organs (ARTHRO: Chelicerata) In arachnids, a lyre-shaped organ on the joints of the legs and other appendages, sterna of the cephalothorax and abdomen and on the sting of Scorpiones; thought to be chemoreceptors; also called slit sense organs.

lyrule n. [L. dim. lyra, lyre] (BRYO) A median tooth on the proximal edge of the orifice.

lyse a. [Gr. lysis, loosen] To undergo lysis.

lysigenoma n. [Gr. lysis, loosen; gene, to produce; -oma, tumor] (NEMATA) The name given a group of giant cells or syncytia denoting their origin from lysis or dissolution of walls of normal cells, forming a tumor-like structure.

lysin n. [Gr. lysis, loosen] Any of a number of substances capable of dissolving cells, bacteria, or tissues.

lysis n. [Gr. lysis, loosen] 1. The decomposition of a substance. 2. The digestion of cells or tissues by enzymatic action.

lyssacine a. [Gr. lysis, loosen; akis, point] (PORIF: Hexactinel-lida) Skeletal framework formed by interlacing of the elongate rays of hexactines producing loose networks with irregular meshes in siliceous sponges; may be considered an earlier stage of the dictyonine framework.

lytic a. [Gr. lysis, loosen] Pertaining to lysis or to a lysin.

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