passage


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pas·sage

(pas'ăj),
1. The act of passing.
2. A discharge, as from the bowels or of urine.
3. Inoculation of a series of animals with the same strain of a pathogenic microorganism whereby the virulence usually is increased, but is sometimes diminished.
4. A channel, duct, pore, or opening.
[Mediev. L. passo, to pass]

passage

(păs′ĭj)
n.
1.
a. A path, channel, or duct through, over, or along which something may pass: the nasal passages.
b. A corridor.
2. Physiology The process of discharging something from a bodily part, such as evacuation of waste from the bowels.
3. Medicine The introduction of an instrument into a bodily cavity.

passage

[pas′ij]
1 an opening, channel, route, or gap.
2 the movement of something from one place to another, as in evacuation of the bowels.

passage

introduction followed by recovery of an infectious agent in an experimental animal or culture medium.

blind passage
passage of an infectious agent through an experimental animal or medium without there being any evidence, clinical or cultural, that the agent is present.
serial passage
repeated passage through a series of experimental animals or media, often with the objective of altering the virulence of the agent or adapting it to grow better.
References in classic literature ?
Then the astonished eyes of the adventurers saw the great stone door revolve on its axis and swing to one side, leaving a passage open through which they could pass.
But the real triumph was reserved for Christine Daae, who had begun by singing a few passages from Romeo and Juliet.
Not only does this passage exist, but I have profited by it several times.
It is an overflow from the Iliadic passage in which Neptune hobbles his horses in bonds "which none could either unloose or break so that they might stay there in that place.
We remained here a week, were not ill-treated by the wreckers, and at length obtained a passage to New York.
It ran along the passage like a path of gold, and in the midst of it Aurora Rome lay lustrous in her robes of green and gold, with her dead face turned upwards.
Following the passage for about fifteen paces farther, we came suddenly to an elaborately painted wooden door.
I say, Uncle William, this passage here, does it really mean that?
cried Biscarrat, who, in his first assault, had seen the passage to the second chamber, and who, animated by the smell of powder, wished to guide his soldiers in that direction.
Sonya, shaking off some down which clung to her and tucking away the verses in the bosom of her dress close to her bony little chest, ran after Natasha down the passage into the sitting room with flushed face and light, joyous steps.
With this the Giant pushed his big arms, which looked like tree-trunks (except that tree- trunks don't wear pink velvet) between the iron bars, and the arms were so long that they touched the opposite wall of the rock passage.
As he sat speculating on the nature and uses of this strange passage and its terminal shaft, the moon topped the opening above, letting a flood of soft, silvery light into the shadowy place.