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Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

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298Maggenti and Gardnerdiscota n. [Gr. diskos, circular plate] (ARTHRO: Insecta) Adultdevelopment from imaginal discs in the embryo. see adiscota.discotriaene n. [Gr. diskos, circular plate; triaina, trident](PORIF) A tetractinal spicule with three rays flattened flushin one plane with a short pointed fourth axis.discrepant a. [L. discrepantia, discordancy] Discordant; disagreeing;different.discrete a. [L. discretus, separated] Well separated; applied todistinct parts.discrimen n. [L. discrimen, division] (ARTHRO: Insecta) A medianlongitudinal sulcus with an internal ridge running alongthe middle <strong>of</strong> the sternum.discus n. [L. discus, circular plate] A flat circular structure,part or area.disease n. [L. dis, without; F. aise, comfort] An alteration <strong>of</strong>function or structure <strong>of</strong> a tissue or organ or <strong>of</strong> an organism;sickness; malady; impaired health.disjugal furrow (ARTHRO: Chelicerata) Pertaining to the furrowseparating the prosoma and opisthosoma <strong>of</strong> mites.disjunct a. [L. disjunctus, disunited] 1. Pertaining to separation<strong>of</strong> parts or formed into groups. 2. (ARTHRO: Insecta)Having the head, thorax and abdomen set <strong>of</strong>f by constrictions.3. (MOLL: Gastropoda) Whorls <strong>of</strong> a shell not touchingeach other.disjunction n. [L. disjunctus, disunited] Separation <strong>of</strong> daughterchromosomes during anaphase <strong>of</strong> mitosis and meioticdivision.disjunct pallial line (MOLL: Bivalvia) A pallial line broken upinto unequal muscle attachments.disk see discdislocate v.t. [L. dis, without; locus, place] To move out <strong>of</strong> itsproper place, as when stria bands or lines are in discontinuity.disomic a. [Gr. dis, twice; soma, body] Cells or individuals inthe 2n condition; cells in the n+1 condition.

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