centerless grinding; centreless grinding
Technical term in manufacturing for grinding cylindrical workpieces without using centers.
Centerless grinding is a machining method suited for mass production of shaft parts.
Standard kanji spelling for centerless grinding.
Variant spelling using okurigana なし instead of 無し.
Compound of 心無し (shinnashi, 'without a center') and 研削 (kensaku, 'grinding').