a widely distributed system consisting of all the cells able to ingest bacteria or colloidal particles etc, except for certain white blood cells
"The immunologist explained that the reticuloendothelial system acts as a massive filtering network throughout the body, capturing invading pathogens before they can spread."
plural of re
"The airline sent a confirmation email with just our booking reference, commonly known as a res."
Clipping of reservation.
In plain English: Res is just a Latin word that means "thing" and is often used in legal terms to refer to property or objects involved in a case.
"Res is an old Roman law term so you won't hear it used in modern conversations."
short form of resurrect
"The internet forum was full of res discussions about bringing back classic video game characters."
In plain English: To res means to rest or relax after doing something tiring.
"The old computer res to life after I plugged it back in."
Derived from Latin, res originally meant "thing" or "matter." It serves as the root for many English words related to reality and existence.