Com-būst’, a.

a. [Lat. combustus, p. p. of comburere, from com and burere, equivalent to urere, to burn.] (Astron.) So near the sun as to be obscured or eclipsed by his light; — said of the moon and planets when not more than eight degrees and a half from the sun. [Obs.] “Planets that are oft combust.” Milton.