Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
self-propelling is an adjective meaning "containing within itself the means of propulsion or movement". It carries 2 recorded senses.
containing within itself the means of propulsion or movement
“a self-propelled vehicle”
moved forward by its own force or momentum
“a self-propelled egotist”
“the arms program is now self-propelled”
Definitions, synonyms and semantic relations for self-propelling come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.