noun
Refers to sugar that has been processed and purified, as opposed to raw or unrefined sugar. Common in food labeling and nutrition contexts.
このお菓子には精製糖が使われています。
Refined sugar is used in this confectionery.
精製糖の摂りすぎに注意しましょう。
Be careful not to consume too much refined sugar.
粗糖 is raw or unrefined sugar, the opposite of 精製糖.
Compound of 精製 (refining) and 糖 (sugar). The exact historical derivation is uncertain, but the term is transparently formed from its components.