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The operation of breaking a stone in the bladder into small pieces capable of being voided.

ance of intellect; not darkened or confused by delirium or madness; marked by the regular operations of reason; as, a lucid interval.

olent enmity; malevolent; malicious; spiteful; -- opposed to benign. Witchcraft may be by operation of malign spirits. Bacon.

Manipulatory; as, manipular operations.

To use the hands in dexterous operations; to do hand work; specifically, to manage the apparatus or instruments used in scientific work, or in artistic or mechanical processes; also, specifically, to use the hand in mesmeric operations.

The use of the hands in mesmeric operations.

The operation of making wares or any products by hand, by machinery, or by other agency.

An officer of high rank, charged with the arrangement of ceremonies, the conduct of operations, or the like; as, specifically:

A masterly operation; a feat. [Obs.] I will do a maistrie ere I go. Chaucer.

The act or operation of masticating; chewing, as of food. Mastication is a necessary preparation of solid aliment, without which there can be no good digestion. Arbuthnot.

angular arrangement of symbols in rows and columns. The symbols may express quantities or operations.

Mechanical operation or action. He acknowledges nothing besides matter and motion; so that all must be performed either by mechanism or accident. Bentley.

The act or operation of meliorating, or the state of being meliorated; improvement. Bacon.

s of the determining factors and hence also of the individuals possessing them) shows the operation of the law: Tallness being due to a factor T, a tall plant, arising by the union in fertilization of two germ cells both bearing this factor, is TT; a dwarf, being without T, is tt. Crossing these, crossbreeds, Tt, resul…

Of or pertaining to the mind; intellectual; as, mental faculties; mental operations, conditions, or exercise. What a mental power This eye shoots forth! Shak. Mental alienation, insanity. -- Mental arithmetic, the art or practice of solving arithmetical problems by mental processes, unassisted by written figures.…

The process or operation of obtaining the mercury, in its fluid form, from mercuric minerals.

The operation of cutting into the uterus; hysterotomy; the Cæsarean section.

The act of one who, or the operation of that which, mows.

rom its discoverer. -- Multiple algebra, a branch of advanced mathematics that treats of operations upon units compounded of two or more unlike units. -- Multiple conjugation (Biol.), a coalescence of many cells (as where an indefinite number of amoeboid cells flow together into a single mass) from which conjugation…

a briefer computation the result of such repeated additions; also, the rule by which the operation is performed; -- the reverse of division.