up

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Related to be up to: cozy up, make up for, give up on, fit into

up

Transport of or relating to a train or trains to a more important place or one regarded as higher

up

[əp]
(engineering)
Fully in operation.
(graphic arts)
In flat-bed terminology, indicating one or more documents being in position to photograph, for example, two up.

up

(jargon)
Working, in order. E.g. "The down escalator is up."

Opposite: down.

up

(1) A device that is currently working.

(2) (uP) (microProcessor) uP is an alternate spelling for µP. Micro comes from the Greek mikros, which means "small," and the symbol is µ. See microprocessor.