infiltrate

From Middle English infiltrate (adj), from Medieval Latin infiltrātus, from infiltrō.

• (UK) IPA^(key): /ˈɪnfɪltɹeɪt/
• (US) IPA^(key): /ˈɪnfəltɹeɪt/, /ɪnˈfɪltɹeɪt/

• Audio (US):

  (file)

infiltrate (third-person singular simple present infiltrates, present participle infiltrating, simple past and past participle infiltrated)

1. (transitive, intransitive) To surreptitiously penetrate, enter or gain access to.

   The spy infiltrated the high-tech company and stole many secrets.

   • 2012, Will Self, Tough, Tough Toys for Tough, Tough Boys‎, →ISBN, page 113:

     Caithness was infiltrated with a palpable sense of being underimagined.

2. (transitive) To cause to penetrate in this way.

   The agency infiltrated several spies into the company.

3. (transitive, intransitive, of a liquid) To pass through something by filtration.
4. (transitive) To cause (a liquid) to pass through something by filtration.
5. (transitive, intransitive, medicine) To invade or penetrate a tissue or organ.

   High-grade tumors often infiltrate surrounding structures.

   In certain conditions, immune cells may infiltrate into the cerebrospinal fluid.

   • 2015 August 5, Roberto Codella et al., “Moderate Intensity Training Impact on the Inflammatory Status and Glycemic Profiles in NOD Mice”, in Journal of Diabetes Research‎, volume 2015, →DOI:

     Plesner et al. reported the nonbeta islet endocrine cell remodeling in diabetic NOD mice: that study suggested that infiltrating immune cells may restrict alpha-cell expansion in NOD mouse islet in the diabetic state [ 36 ].

6. (transitive, military) To send (soldiers, spies, etc.) through gaps in the enemy line.

   Antonym: exfiltrate

7. (intransitive, of an intravenous needle) To move from a vein, remaining in the body.

• infiltration
• infiltrative
• infiltrator

infiltrate (plural infiltrates)

1. (pathology) Any undesirable substance or group of cells that has made its way into part of the body.
   • 2008, Jimmy D. Bartlett, Siret D. Jaanus, Clinical Ocular Pharmacology, page 539:

     One critical distinction to make is whether a focal corneal infiltrate is infected with bacteria or is a sterile immunologic response.

   • 2013, Otto Braun-Falco, Dermatology, page 141:

     Extensive lumpy infiltrates with a tendency to caseate and to form fistulas with purulent secretions appear, mainly in the anogenital region.

   • 2015, Brook McConnell, M. Sherif Said, Vijay R. Ramakrishnan, “Nasal septal perforation associated with pyoderma gangrenosum”, in Allergy & Rhinology‎, volume 6, →DOI:

     Common immunohistochemical markers of this lymphoma include CD2, CD56, CD3, and T-cell receptors. 7 Typically, the histology of these lymphomas are characterized by monomorphic inflammatory cellular infiltrates, which may be diffuse or show angiocentricity and angiodestruction as well as tissue destruction. 7 Lymphoid markers from the nasal mucosal biopsy from this patient were negative for CD56 and EBER.

infiltrate

1. past participle of infiltrar

infiltrate

1. inflection of infiltrare:
   1. second-person plural present indicative
   2. second-person plural imperative

infiltrate f pl

1. feminine plural of infiltrato

• infeltrita, infettarli

infiltrate

1. second-person singular voseo imperative of infiltrar combined with te