opercular valves
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opercular membrane — Thin, flexible membrane attaching opercular valves to sheath, periodically shed during ecdysis, in balanomorph Cirripedia; represented by membranous hinge in verrucomorph Cirripedia [McLaughlin, 1980]. (Subclass Cirripedia): Barnacle shell… … Crustacea glossary
opercular membrane — (ARTHROPODA: Crustacea) In Balanomorpha, a thin, flexible membrane attaching the opercular valves to the sheath; in Verrucomorpha, a membranous hinge … Dictionary of invertebrate zoology
shell — In cirripeds, general term for hard parts of balanomorphs including compartment plates, basis (if calcareous), and opercular valves [Moore and McCormick, 1969]. (Order Cladocera): Carapace [Stachowitsch, 1992]. (Order Diplostraca): Carapace… … Crustacea glossary
latus — Any of lepadomorph capitular plates except paired scuta and terga and unpaired rostrum, carina, subrostrum, and subcarina. Smaller plates in basal whorls below paired latera referred to as lower latera; sometimes all or some absent. Types of… … Crustacea glossary
orifice — Opening in sessile barnacle wall occupied by operculum. See: aperture [McLaughlin, 1980]. Opening in upper part of cirriped shell containing opercular valves [Moore and McCormick, 1969]. (Subclass Cirripedia): Aperture [Stachowitsch, 1992] … Crustacea glossary
fish — fishless, adj. /fish/, n., pl. (esp. collectively) fish, (esp. referring to two or more kinds or species) fishes, v. n. 1. any of various cold blooded, aquatic vertebrates, having gills, commonly fins, and typically an elongated body covered with … Universalium
Fish — /fish/, n. Hamilton, 1808 93, U.S. statesman: secretary of state 1869 77. * * * I Any of more than 24,000 species of cold blooded vertebrates found worldwide in fresh and salt water. Living species range from the primitive lampreys and hagfishes… … Universalium
valve — Lateral part of divided carapace commonly joined to opposite part by hingement along dorsal mid line (e.g., Ostracoda, Conchostraca, Leptostraca) [Moore and McCormick, 1969]. Lateral part of divided carapace, commonly joined to opposite part by… … Crustacea glossary
fold — 1. A ridge or margin apparently formed by the doubling back of a lamina. SYN: plica. 2. In the embryo, a transient elevation or reduplication of tissue in the form of a lamina … Medical dictionary
syndrome — The aggregate of symptoms and signs associated with any morbid process, and constituting together the picture of the disease. SEE ALSO: disease. [G. s., a running together, tumultuous concourse; (in med.) a concurrence of symptoms, fr. syn,… … Medical dictionary
