Examples from the Web for emersion
At about ten, I observed an emersion of Jupiter's second satellite; time by the achrometer 8.
I obtained, with other observations, an immersion and emersion of the third satellite.
At three in the morning I obtained an observation of an emersion of the first satellite of Jupiter, with other observations.
We were sitting together last night in the turret of his house, watching the emersion of a satellite of Jupiter.Shorter Novels, Eighteenth Century|Samuel Johnson
I obtained an emersion of the first satellite under favorable circumstances, the night being still and clear.
British Dictionary definitions for emersion
Word Origin for emersion
Word Origin and History for emersion
1630s, noun of action from past participle stem of Latin emergere (see emerge). Originally of eclipses and occultations.