Pronunciation: (i-lông-gā'shun, i-long-, ē"lông-, ē"long-),[key] —n. 1. the act of elongating or the state of being elongated.
2. something that is elongated.
3. Astron.the angular distance, measured from the earth, between a planet or the moon and the sun or between a satellite and the planet about which it revolves.