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To shine as phosphorus; to be phosphorescent; to emit a phosphoric light.

The quality or state of being phosphorescent; or the act of phosphorescing.

A phosphorescent substance.

und in roundish masses composed of radiating fibers, first discovered near Bologna. It is phosphorescent when calcined. -- Bologna vial, a vial of unannealed glass which will fly into pieces when its surface is scratched by a hard body, as by dropping into it a fragment of flint; whereas a bullet may be dropped into i…

roup; -- so called from the double effect of fire upon it, in fusing it, and rendering it phosphorescent.

A phosphorescent light that appears, in the night, over marshy ground, supposed to be occasioned by the decomposition of animal or vegetable substances, or by some inflammable gas; -- popularly called also Will-with-the-wisp, or Will-o'-the-wisp, and Jack-with-a- lantern, or Jack-o'-lantern.

The light thus produced; luminosity; phosphorescence.

." Macaulay. " A luminous statement." Brougham. Luminous paint, a paint made up with some phosphorescent substance, as sulphide of calcium, which after exposure to a strong light is luminous in the dark for a time.

ia, remarkable for their unusually large size and complex structure, as well as for their phosphorescence. The brilliant diffuse phosphorescence of the sea is often due to myriads of Noctilucæ.

A fatlike substance in certain marine animals, to which they owe their phosphorescent properties.

Phosphorescent. [Obs.]

Phosphorescent. "A phosphoric sea." Byron. Glacial phosphoric acid. (Chem.) (a) Metaphosphoric acid in the form of glassy semitransparent masses or sticks. (b) Pure normal phosphoric acid. -- Phosphoric acid (Chem.), a white crystalline substance, H3PO4, which is the most highly oxidized acid of phosphorus, and forms…

Generating phosphorescence; as, phosphorogenic rays.

An apparatus for observing the phosphorescence produced in different bodies by the action of light, and for measuring its duration.

Hence, any substance which shines in the dark like phosphorus, as certain phosphorescent bodies. Bologna phosphorus (Chem.), sulphide of barium, which shines in the dark after exposure to light; -- so called because this property was discovered by a resident of Bologna. The term is sometimes applied to other compounds…

A genus including certain comma-shaped marine bacteria which emit bluish or greenish phosphorescence. Also, any microörganism of this group.

Any one of several substances or mixtures which phosphoresce or ignite spontaneously on exposure to air, as a heated mixture of alum, potash, and charcoal, or a mixture of charcoal and finely divided lead.

ders, sometimes two or three feet long, which swim at the surface of the sea and are very phosphorescent.

copelus, or family Scopelodæ, which includes many small oceanic fishes, most of which are phosphorescent. -- n. (Zoöl.)

ulphide of barium (Bolognese or Bologna phosphorus), calcium sulphide, etc., which become phosphorescent, and shine in the dark, after exposure to sunlight or other intense light. -- Solar plexus (Anat.), a nervous plexus situated in the dorsal and anterior part of the abdomen, consisting of several sympathetic gangli…