: a person who has scientific training and who designs and builds complicated products, machines, systems, or structures : a person who specializes in a branch of engineering
: a person who runs or is in charge of an engine in an airplane, a ship, etc.
: a person who runs a train
: to plan, build, or manage (something) by using scientific methods
: to produce or plan (something) especially in a clever and skillful way
: to change the genetic structure of (a plant or animal)
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