Located at or nearest to the very center; the most central position possible.
From 'center' plus the superlative suffix '-most,' similar to 'topmost' or 'innermost.' This archaic formation is rarely used in modern English.
While grammatically correct, 'centermost' sounds almost Shakespearean today—we'd usually just say 'very center' instead, showing how English simplifies redundant superlatives over time.
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