foreign matter

foreign matter

[′fär·ən ‚mad·ər]
(science and technology)
Any substance not belonging naturally in the place where found.
References in classic literature ?
Pretending to read a smeary newspaper long out of date, which had nothing half so legible in its local news, as the foreign matter of coffee, pickles, fish-sauces, gravy, melted butter, and wine, with which it was sprinkled all over, as if it had taken the measles in a highly irregular form, I sat at my table while he stood before the fire.
Meeting my betrothed in an avenue thronged with the élite of the city, I was hastening to greet her with one of my best considered bows, when a small particle of some foreign matter, lodging in the corner of my eye, rendered me, for the moment, completely blind.
Weakened in mind by his frequent losses of this instrument, and its determination not to stick in his eye, and more and more enfeebled in intellect every time he looked at the mysterious Clennam, he applied spoons to his eyes, forks, and other foreign matters connected with the furniture of the dinner-table.
after interior glass and windows have been cleaned there shall be no traces of film, dirt, smudges and water spots or other foreign matter left on the windows and sills.
Tiny fragments of foreign matter in the fiber could remain visible as unsightly blemishes, as well as scratching or abrading the user's skin.
White metal is a term used to describe a surface that's uniformly free of all foreign matter and white or gray in appearance.
Common physical qualities used in grading milled rice include number of paddy (unmilled rice kernels) in 1 kg of milled rice, moisture content of grains and percentages of foreign matter, chalky immature grains, contrasting types and broken grains.
Also it helps in the threshing and the separation of the foreign matter.
Their "blind," closed-end design effectively creates a barrier to protect the nut's threads against foreign matter and to prevent potential damage to internal components from mating screws.
Capable of removing up to 90% of tire contaminants-including dirt, black tire dust, foreign matter and moisture--the system may also be configured for wet cleaning and disinfection.
Capable of removing up to 90% of tire contaminants--including dirt, black tire dust, foreign matter and moisture--the system may also be configured for wet cleaning and disinfection.
Once installed, the system requires foreign matter collected in the tray to be removed once a month.

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