compressor (kompresor)

[L. compre or, compre or Specifically-(a) In surg., an instrument used for compre ing some part of the body, for which it is adapted in form. (b) An attachment to a microscope, used for compre ing objects in order to render po ible a more complete examination of them. Also compre orium. (c) In gun., a mechanism for holding a gun-carriage to its slide or platform during recoil. (d) A machine, usually driven by steam, by which air is compre ed into a receiver so that its expansion may be utilized as a source of power at some distance, and usually at some place where an ordinary steam-engine could not be conveniently used, as deep in a mine. (e) Naut., a curved lever, worked by a small tackle just below the deck, for checking the chain cable when it is running out. (f) [NL.; pl. compre ores (kompre-so'rēz).] In an at., a name of several muscles which pre together the parts on which they act, or pre upon them: as, the compre or naris, a muscle which compre es and closes or tends to close the nostrils; the com pre or urethræ, etc. - Aortic compre or. See aortic. -Compre or oculi (compre or of the eye), the cho a no ide us or choanoid muscle of the eyeball of most mammals, but not found in man. - Compre or prost atæ (compre or of the prostate), a muscle which compre es the prostate gland. - Compre or sacculi laryngis (compre or of the sac of the larynx). Same as aryteno epiglottideus. - Compre or urethræ (compre or of the urethra), a muscle which compre es the urethra, facilitating the complete discharge of urine. Hydraulic compre or. See hydraulic. - Parallel compre or, a de vice for holding or compre ing objects on the stand of a microscope. It consists of two plates of metal joined by hinged rods so as always to maintain a parallel position from each other by a screw. Reversible compre or, a microscope-slide fitted with a compre or which can be inverted to permit examination of either side of an object. compre orium (kom-pre-sō'ri-um), n.; pl. compre or i a (-a). [NL., reference to each other, and moved toward or away