injection of a liquid substance into a plant or soil.

Merriam-Webster Online Dictionary
injection (noun)
a) an act or instance of - injecting
b) the placing of an artificial satellite or a spacecraft into an orbit or on a trajectory , also the time or place at which injection occurs
something (as a medication) that is - injected
a mathematical function that is a one-to-one mapping - compare bijection surjection
injection (Wikipedia)

Injection or its variants may refer to:

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