What does "infiltrate" mean?

Any undesirable substance or group of cells that has made its way into part of the body.

What is a synonym for "infiltrate"?

Common synonyms include: absorb, adsorb, advance, advance against, advance upon, assimilate.

Pronounced //ˈɪnfəltɹeɪt//.

//ˈɪnfəltɹeɪt// noun, verb

noun, verb ·Common ·High school level

Noun

1
Any undesirable substance or group of cells that has made its way into part of the body.
"One critical distinction to make is whether a focal corneal infiltrate is infected with bacteria or is a sterile immunologic response."

Verb

1
To surreptitiously penetrate, enter or gain access to. ambitransitive
"The spy infiltrated the high-tech company and stole many secrets."
2
pass through an enemy line; in a military conflict wordnet
3
To cause to penetrate in this way. transitive
"The agency infiltrated several spies into the company."
4
pass into or through by filtering or permeating wordnet
5
To pass through something by filtration. ambitransitive

Show 6 more definitions

6
cause (a liquid) to enter by penetrating the interstices wordnet
7
To cause (a liquid) to pass through something by filtration. transitive
8
enter a group or organization in order to spy on the members wordnet
9
To invade or penetrate a tissue or organ. ambitransitive
"High-grade tumors often infiltrate surrounding structures."
10
To send (soldiers, spies, etc.) through gaps in the enemy line. transitive
11
To move from a vein, remaining in the body. intransitive