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To take place; to occur. All these things which had happened. Luke xxiv. 14. To happen on, to meet with; to fall or light upon. "I have happened on some other accounts." Graunt. -- To happen in, to make a casual call. [Colloq.]

A hydrous silicate of alumina and baryta, occurring usually in white cruciform crystals; cross-stone.

l faculties; as, a good head, that is, a good mind; it never entered his head, it did not occur to him; of his own head, of his own thought or will. Men who had lost both head and heart. Macaulay.

Consisting of seven days, or occurring at intervals of seven days; weekly.

nsumptive; as, a hectic patient. Hectic fever (Med.), a fever of irritation and debility, occurring usually at a advanced stage of exhausting disease, as a in pulmonary consumption.

ortant ore of iron, the sesquioxide, so called because of the red color of the powder. It occurs in splendent rhombohedral crystals, and in massive and earthy forms; -- the last called red ocher. Called also specular iron, oligist iron, rhombohedral iron ore, and bloodstone. See Brown hematite, under Brown.…

rotruded as to arrest its circulation, and produce swelling of the protruded part. It may occur in recent or chronic hernia, but is more common in the latter.

A cell larger than the others, and of different appearance, occurring in certain algæ related to nostoc.

A mineral of the Zeolite family, often occurring in amygdaloid, in foliated masses, and also in monoclinic crystals with pearly luster on the cleavage face. It is a hydrous silicate of alumina and lime.

into twelve months, with an extra month inserted after every month in which two new moons occur (once in three years). The intercalary month has the name of the one which precedes it. The year usually commences about April 11. The months are follows:

A soluble ferment occurring in the animal body, to the presence of which many normal decompositions and synthetical processes are supposed to be due.

Occurring rarely; adapted for a special occasion. Courage is but a holiday kind of virtue, to be seldom exercised. Dryden.

Occurring once an hour; continuing an hour; hourly; ephemeral. Horary, or soon decaying, fruits of summer. Sir T. Browne. Horary circles. See Circles.

A mass of earthy matter, or rock of the same character as the wall rock, occurring in the course of a vein, as of coal or ore; hence, to take horse -- said of a vein -- is to divide into branches for a distance.

Happening or done every hour; occurring hour by hour; frequent; often repeated; renewed hour by hour; continual. In hourly expectation of a martyrdom. Sharp.

an enlargement of the bursa in the front of the kneepan; -- so called because frequently occurring in servant girls who work upon their knees.

A mineral of brownish black color, occurring in columnar or foliated masses. It is native manganese tungstate.

es of the brain; dropsy of the brain. It is due usually to tubercular meningitis. When it occurs in infancy, it often enlarges the head enormously.

A hydrous carbonate of magnesia occurring in white, early, amorphous masses.

f drought or deficiency of food. In some instances, a process of spore formation seems to occur within such cysts.