精せい錬れん

noun, noun or participle which takes 'suru', transitive verb

refining; smelting

Technical term for purifying metals or other materials through heating or chemical processes. Used in industrial contexts.

• この工こう場じょうでは鉄てっ鉱こう石せきを精せい錬れんしている。

  This factory smelts iron ore.

• 銅どうの精せい錬れんには高こう温おんが必ひつ要ようだ。

  High temperatures are necessary for copper refining.

noun, noun or participle which takes 'suru', transitive verb

training; drilling; polishing (skills)

Only when written 精錬 / 精煉

Metaphorical extension of refining; used for intensive training or honing of skills, often in sports or arts. Restricted to the kanji forms 精錬 and 精煉.

See also: 精練

• 選せん手しゅたちは合がっ宿しゅくで技わざを精せい錬れんした。

  The athletes polished their skills at the training camp.

• 彼かれは書しょ道どうの精せい錬れんに励はげんでいる。

  He is devoted to the training of calligraphy.