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An instrument for dividing the cornea in operations for cataract.

herwise specified, it is the simple average, formed by adding the quantities together and dividing by their number, which is called an arithmetical mean. A geometrical mean is the square root of the product of the quantities.

Used in, or adapted for, ascertaining measurements, or dividing by measure. Measuring faucet, a faucet which permits only a given quantity of liquid to pass each time it is opened, or one by means of which the liquid which passes can be measured. -- Measuring worm (Zoöl.), the larva of any geometrid moth. See Geometri…

Situated in the middle; lying in a plane dividing a bilateral animal into right and left halves; -- said of unpaired organs and parts; as, median coverts. Median line. (a) (Anat.) Any line in the mesial plane; specif., either of the lines in which the mesial plane meets the surface of the body. (b) (Geom.) The line dra…

Dividing into cells or segments; characterized by separation into two or more parts or sections by the formation of internal partitions; as, merismatic growth, where one cell divides into many.

The mesial plane dividing the body of an animal into similar right and left halves. The line in which it meets the dorsal surface has been called the dorsimeson, and the corresponding ventral edge the ventrimeson. B. G. Wilder.

A set of four; -- from the old practice of dividing companies into sets of four at dinner. [Obs.] Latimer.

, a compound microscope combined with a filar micrometer, used chiefly for reading and subdividing the divisions of large astronomical and geodetical instruments. -- Micrometer screw, a screw with a graduated head used in some forms of micrometers. -- Position micrometer. See under Position. -- Scale, or Linear, mic…

The operation of dividing the navel-string.

Strong nippers or a chisel for dividing bone.

The operation of dividing a bone or of cutting a piece out of it, -- done to remedy deformity, etc.

The act of dividing and distributing in portions or parts.

Division; the act of dividing or sharing. [Obs.] Fuller.

Serving to part; dividing; separating.

The act of parting or dividing; the state of being parted; separation; division; distribution; as, the partition of a kingdom. And good from bad find no partition. Shak.

ircumference; it is sometimes described by the number expressing the quotient obtained by dividing the number of teeth in a wheel by the diameter of its pitch circle in inches; as, 4 pitch, 8 pitch, etc. -- Pitch chain, a chain, as one made of metallic plates, adapted for working with a sprocket wheel. -- Pitch line,…

The act or process of dividing out proportionally.

The act or art of punctuating or pointing a writing or discourse; the art or mode of dividing literary composition into sentences, and members of a sentence, by means of points, so as to elucidate the author's meaning.

The quotient arising from dividing unity by any quantity; thus ¼ is the reciprocal of 4; 1/(a + b) is the reciprocal of a + b. The reciprocal of a fraction is the fraction inverted, or the denominator divided by the numerator.

In the widest sense, a dividing into short portions by a regular succession of motions, impulses, sounds, accents, etc., producing an agreeable effect, as in music poetry, the dance, or the like.