Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
compactly is an adverb meaning "in a compact manner or state". It carries 3 recorded senses.
in a compact manner or state
“The children were packed compactly into the car”
with concise and precise brevity; to the point
“Please state your case as succinctly as possible”
“he wrote compactly but clearly”
taking up no more space than necessary
“liquid food compactly stored in a pressurized tank”
Definitions, synonyms and semantic relations for compactly come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.