Meaning of INJECTION in English

I. ə̇nˈjekshən noun

( -s )

Etymology: Middle French or Latin; Middle French, from Latin injection-, injectio, from injectus + -ion-, -io -ion



(1) : the act or an instance of injecting a drug or other substance into the body

(2) : a solution of a drug, nutrient, or other substance injected (as by catheter or needle) into the tissues, a vein, or a body cavity

(3) : a solution or suspension of a drug intended for administration under or through the skin or mucous membranes by means of a hypodermic syringe

(4) : an act or process of injecting vessels or tissues ; also : a specimen prepared by injection — compare corrosion

(5) : the state of being injected : congestion

b. : the intrusion of molten magma between rocks

c. : the introduction under pressure of one substance (as fuel oil, combustion air, or water spray) into a working space (as a diesel cylinder, a gas-turbine combustor, or a steam desuperheater)

2. : the act or an instance of introducing some element or factor into a situation or subject

injection into news reports of the editor's political prejudices — Martin Gardner

II. noun


a. : the placing of an artificial satellite or a spacecraft into an orbit or on a trajectory — called also insertion

b. : the time or place at which injection occurs

2. : a mathematical function that is a one-to-one mapping — compare bijection herein surjection herein

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.