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A black or greenish black mineral occurring in foliated flates, also in velvety bronze-colored incrustations. It is a hydrous silicate of iron and alumina.

he motion of a machine, as when a certain operation is completed, or when an imperfection occurs in its performance or product, or in the material which is supplied to it, etc. -- Stop plank, one of a set of planks employed to form a sort of dam in some hydraulic works. -- Stop valve, a valve that can be closed or op…

A narration or recital of that which has occurred; a description of past events; a history; a statement; a record. One malcontent who did indeed get a name in story. Barrow. Venice, with its unique city and its Impressive story. Ed. Rev. The four great monarchies make the subject of ancient story. Sir W. Temple.…

To be dispersed or separated; to occur at intervals. "Straggling pistol shots." Sir W. Scott. They came between Scylla and Charybdis and the straggling rocks. Sir W. Raleigh.

A genus of bacilli occurring of the form of long, smooth and apparently branched threads, either straight or twisted.

laryngitis (Med.), a form of croup, or laryngitis, in children, associated with dyspnoea, occurring usually at night, and marked by crowing or stridulous breathing.

s differing from itself also in other respects, as the tapeworm, -- one of the forms that occur in metagenesis.

Strontium carbonate, a mineral of a white, greenish, or yellowish color, usually occurring in fibrous massive forms, but sometimes in prismatic crystals.

A metallic element of the calcium group, always naturally occurring combined, as in the minerals strontianite, celestite, etc. It is isolated as a yellowish metal, somewhat malleable but harder than calcium. It is chiefly employed (as in the nitrate) to color pyrotechnic flames red. Symbol Sr. Atomic weight 87.3. A rad…

Occurring without the possibility or the fact of an attendant consciousness; -- said of states of the soul.

ity of being subconscious; a state of mind in which perception and other mental processes occur without distinct consciousness.

Occurring beneath a crust or scab; as, a subcrustaceous cicatrization.

An unexpected occurrence; a surprise. All of a sudden, On a sudden, Of a sudden, sooner than was expected; without the usual preparation; suddenly. How art thou lost! how on a sudden lost! Milton. He withdrew his opposition all of a sudden. Thackeray.

A nonmetallic element occurring naturally in large quantities, either combined as in the sulphides (as pyrites) and sulphates (as gypsum), or native in volcanic regions, in vast beds mixed with gypsum and various earthy materials, from which it is melted out. Symbol S. Atomic weight 32. The specific gravity of ordinary…

The formation of a fetus at the result of an impregnation occurring after another impregnation but before the birth of the offspring produced by it. This is possible only when there is a double uterus, or where menstruation persists up to the time of the second impregnation. In then became a superfetation upon, and not…

To come as something additional or extraneous; to occur with reference or relation to something else; to happen upon or after something else; to be added; to take place; to happen. Such a mutual gravitation can never supervene to matter unless impressed by divine power. Bentley. A tyrany immediately supervened. Burke.…

in the fifteenth and sixteenth centuries, characterized by profuse sweating. Death often occured in a few hours.

One of a series of flat, fringed, and usually bilobed, appendages, of which several pairs occur on the abdominal somites of many crustaceans. They are used as fins in swimming.

luride of gold and silver, of a steel-gray, silver-white, or brass-yellow color. It often occurs in implanted crystals resembling written characters, and hence is called graphic tellurium. [Written also silvanite.]

A representation, in the same picture, of two or events which occured at different times.