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Pronunciation varies by accent · noun
(astronomy, of the disk of a spiral galaxy) The presence of an outer radial surface brightness profile that is distinctly shallower in scope than the main disk profile..
Use antitruncation when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Antitruncation means (astronomy, of the disk of a spiral galaxy) The presence of an outer radial surface brightness profile that is distinctly shallower in scope than the main disk profile..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use antitruncation where its definition matches the intended context.
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