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1. Pathol any substance that passes into and accumulates within cells, tissues, or organs
2. Pathol a local anaesthetic solution injected into the tissues to cause local anaesthesia



an accumulation in bodily tissues of cellular elements admixed with blood and lymph. Inflammatory and tumorous infiltrates occur most often.

An inflammatory infiltrate consists chiefly of polymorphonuclear leukocytes (suppurative infiltrate), erythrocytes (hemorrhagic infiltrate), lymphoid cells (round cell infiltrate), and histiocytes and plasma cells (histiocyte-plasma cell infiltrate). These infiltrates may be resolved, may liquefy, or may undergo sclerosis and form caverns, abscesses, scars, and so forth.

A tumorous infiltrate consists of tumor cells of different kinds (carcinoma, sarcoma); it is a manifestation of the infiltrating growth of a tumor. When an infiltrate forms, the tissue enlarges, changes color, and becomes harder and sometimes painful. In surgical practice, an infiltrate is an induration that develops in tissues when they become saturated with an anesthetic.


References in periodicals archive ?
However, he said, a large number of militants have infiltrated in the past three months.
Percentage of IVs that Infiltrated in First 24 Hours Pre- Post- Patient Unit Implementation Implementation Medical and surgical units 52% (n = 14) 36% (n = 4) Overall across all units 45% (n = 23) 42% (n = 8) Table 2.
He said: "They believe that they have been infiltrated by Mi5 and are being very careful, watching what they say, but it's just paranoia.
Spokesman of the national transition council, former Justice Minister, Mustapha Abdeljalil Boudjaj, denounced that among the mercenaries who infiltrated Libya there are Malians, Nigeriens, Ethiopians, and unfortunately polisario mercenaries," Errichi told reporters.
The protesters' legal team claimed the decision was made after Mr Kennedy, a former Metropolitan Police officer who infiltrated the group in the guise of a long-haired climber called Mark Stone, offered to give evidence on their behalf.
Prostatic tissue infiltrated by an atypical lymphoid infiltrate under low and high power.
Al-Qaeda in Iraq has infiltrated records of psychiatric hospitals,A" he said.
The Washington Times concluded on November 18, a day after the initial raid: "The discovery of a secret Iraqi Interior Ministry torture chamber confirms what has been an open secret in Baghdad for months: Pro-Iranian militia have deeply infiltrated the ministry and are acting as a law unto themselves.
Michael Ealy stars as a federal agent who has infiltrated a terrorist group in L.
The film stars Matt Damon as a gangster who has infiltrated the Boston police department, while co-star Leonardo DiCaprio plays a policeman who infiltrates the mob.
In the embryos given saline, only a few new blood vessels infiltrated the tumors, which grew only slightly.