(redirected from infiltrator)
Also found in: Dictionary, Thesaurus, Medical, Legal, Wikipedia.


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 ?
Infiltrator Systems has set a strategic goal of streamlining and optimizing its supply chain.
Major General Nasser Al Menhali, Acting Assistant Undersecretary of the Department, Ministry of Interior, pledged to pursue the night and day campaigns against suspicious dens harbouring remains of infiltrators and violators in order to arrest them and those who offer refuge to them.
A central component of this plan is the construction of a fence along the western border which prevents infiltrators from crossing.
For his part, "ousted" Egyptian President Hosni Mubarak said that the protesters in Egypt were mobilized by thousands of infiltrators who received training abroad.
Holding nearly 30 patents, Infiltrator is the originator and leading innovator of plastic chamber technology used in wastewater management," said American Capital Vice President Steve Gord.
author and expert on the North Korean military, the last infiltrator, Li Chul Jin, escaped to North Korea.
In New York, police infiltrators befriended Black Panthers, advocated violence, and planted evidence.
Since its inception in 1987, Infiltrator has introduced innovative products that meet increasingly stringent environmental and regulatory onsite wastewater treatment requirements.
Accurate surveillance of all the outlets and security checkpoints under the Border Guard forces resulted in the capture of an infiltrator without resistance," the source told Aswat al-Iraq news agency.
The source didn't disclose the identity of the died infiltrator but said that the Israeili army and ambulance teams treated two other infiltrators who were lightly hurt and took them to Be'er Sheva's Soroka hospital.
South Korean troops opened fire shortly after daybreak today when they spotted a North Korean infiltrator on a mountain slope, officials said.