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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
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



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.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The Dubai Police are organising campaigns to arrest violators and infiltrators and spread awareness among the public about the danger of illegal residents.
For the time being, Mr Netanyahu is stuck with his African "terrorists." He's yet to prove any of the "infiltrators" wielded a kitchen knife on entry.
Lt.Colonel al-Wahibi pointed out that the largest number of infiltrators was reported in the Governorate of Al Buraimi by 260 infiltrators, followed by the Governorate of South Al Batinah by 101 infiltrators, the Governorate of Muscat with 83 infiltrators, North Al Batinah with 79 infiltrators, Musandam by 54 infiltrators, Dhofar with 28, A'Dakhiliyah by 14 infiltrators, A'Dhahirah with 7 infiltrators, North A'Sharqiyah by 5 infiltrators and 1 infiltrator in each of South A'Sharqiyah and Al Wusta.
The General Security said in a statement that two Lebanese men have been arrested over alleged links to ISIS and planning bomb attacks against security forces, claiming that they also sent "infiltrators" to disrupt the recent anti-government protests in Beirut.
While leftist organizations have claimed the infiltrators are refugees, figures presented by the state have shown the overwhelming majority of them are not refugees, but rather work migrants breaking the law in a search of greater job opportunities.
Media spokesman for Border Guards in the Eastern province, Omar bin Mohammed Al-Aklabi said, the numbers of infiltrators and drowning accidents' victims have been reduced at this year as result of the border Guards' efforts to raise awareness among beach visitors of marine safety.
A total of 100 infiltrators have been deported after necessary legal measures were taken in coordination with embassies of their countries.
The Army is said to have got the whiff of the infiltrators' presence in the village on September 21.
Last month only two infiltrators crossed the border, as opposed to over 2,000 one year ago.
"The 53 illegal residents and two infiltrators, all Asians, are being interrogated, and shall later be referred to the bodies concerned for stringent legal action."
Ever since the eruption of the recent Arab revolutions, the people have been receiving warnings about the presence of "infiltrators" described by the governments as being "opposed to security and stability," and planning on using the protests to carry out sabotage and create anarchy.