Mean-distance
noun, Astronomy.
1.
the arithmetic mean of the greatest and least distances of a planet from the sun, used in stating the size of an orbit; the semimajor axis.
noun
1.
the average of the greatest and least distances of a celestial body from its primary
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[mee-an-druh s] /miˈæn drəs/ adjective 1. ; winding; rambling.
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[meen] /min/ adjective, meaner, meanest. 1. offensive, selfish, or unaccommodating; nasty; malicious: a mean remark; He gets mean when he doesn’t get his way. 2. small-minded or ignoble: mean motives. Synonyms: contemptible, despicable. 3. penurious, stingy, or miserly: a person who is mean about money. Synonyms: niggardly, close, tight, parsimonious, illiberal, ungenerous, selfish. 4. inferior […]
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noun phrase An expert; maven: John, who’s a mean bean at squash and horseback riding (1980s+)