palp proboscis/proboscide (MOLL: Bivalvia) A tentaculiform outgrowth on each outer labial palp that can extend into or on the substrate, where ciliated and glandular surfaces pick up particles of food.
palpus/palp n.; pl. -pi [L. palpus, feeler] 1. (ANN) a. In Oli-gochaeta, one of a pair of elongate projections on the anal segment. b. In Polychaeta, one of a pair of projections on the sides of the head. 2. (ARTHRO: Chelicerata) a. In Arachnida, the segmented appendage of the pedipalp, excluding coxa and endite; simple in female, a reproductive organ in males. b. In Acari, paired appendage of segment 2, sensory in function; maybe up to 6 segments long. 3. (ARTHRO: Crustacea) In Cirripedia, oval, setose mandibular endopod attached to the mandible or to the lateral margin of the labium. 4. (ARTHRO: Insecta) A telopodite of the gnathal appendage. see maxillary palpus; labial palp/palpus.
paludicole a. [L. paludis, marsh; colere, to inhabit] Living in or frequenting marshes.
palule n. [L. palus, stake] (CNID) A detached calcareous process of corals.
palus n.; pl. -li [L. palus, stake] 1. A stake-like structure. 2. (CNID) A verticle column along the inner edge of some septa.
pandemic a. [Gr. pan, all; demos, people] A widespread epidemic. see eumenical, cosmopolitan, endemic.
panduriform a. [L. pandura, musical instrument; forma, shape] Violin-shaped, oblong at the two extremities and contracted in the middle; pandurate.
Pangaea n. [Gr. pan, all; gaia, earth] The theory of an ancient continent from which the present continents split off by continental drift.
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