World English Dictionary
injection (ɪnˈdʒɛkʃən)
1.  fluid injected into the body, esp for medicinal purposes
2.  something injected
3.  the act of injecting
4.  a.  the act or process of introducing fluid under pressure, such as fuel into the combustion chamber of an engine
 b.  (as modifier): injection moulding
5.  maths surjection See also bijection a function or mapping for which f(x) = f(y) only if x = y

Collins English Dictionary - Complete & Unabridged 10th Edition
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