Occultation: Usually means when a planet or star is hidden by the moon, but it also includes "occultation" of a star by a planet or of a satellite by a planet or of one planet by another.

At the stationary camp, however, the mists rising from the lake obscured the horizon and rendered the eclipses of Jupiter's satellites invisible; nor was it possible to observe the only occultation of a star which calculation rendered probable during the period in question.

It happened this night that she passed over the star Fomalhautan occultation which I watched with great interest through an excellent field-glass, but which lasted only for about half a minute.

In 1830 still the same, with the additions:that I formally gave the corrections of relative right-ascension of fundamental stars (without alteration of equinox, which I had not the means of obtaining) to be used in the year 1831; and that I reduced completely the observed occultations (with a small error, subsequently corrected).