Source : Webster's Revised Unabridged Dictionary (1913)

Compactly \Com*pact"ly\, adv.
   In a compact manner; with close union of parts; densely;
   tersely.

Source : WordNet®

compactly
     adv 1: in a compact manner or state; "The children were packed
            compactly into the car"
     2: with concise and precise brevity; to the point; "Please
        state your case as succinctly as possible"; "he wrote
        compactly but clearly" [syn: {succinctly}]
     3: taking up no more space than necessary; "liquid food
        compactly stored in a pressurized tank"