adj. In close conjunction with the sun (so that its astrological influence is "burnt up"), sometimes specified to be within 8 degrees 30'.
the GNU version of the Collaborative International Dictionary of English
adj. Burnt; consumed.
adj. So near the sun as to be obscured or eclipsed by his light, as the moon or planets when not more than eight degrees and a half from the sun.
The Century Dictionary and Cyclopedia
Burnt.
Hence In astronomy, so near the sun as to be obscured by it, or not more than 8½° from it.
To inflame with excitement and agitation.
To burn up or consume with fire.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
v. start to burn or burst into flames
v. cause to burn or combust
v. get very angry and fly into a rage
v. cause to become violent or angry
v. undergo combustion
Word Usage
"If a pile rises to 160 degrees or more it could spontaneously combust, which is why the zoo is acquiring a thermometer to measure internal temperature of its manure piles."