Question

means & full form of w.r.t.

Answer 1

w.r.t full form is "with respect to ". It generally means that we are saying something in respect to that thing . Here respect means in relation to something . For example---- At steady state temperature of any cross- sectional area will remain constant w.r.t time.

Answer 2

full form of w.r.t. is With Respect To
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it is usually used when we relate 2 objects or bodies etc
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for example
the velocity of the the moving body with respect to the person watching it move is 45 m/s² etc