noun
sushi rice; vinegared rice for sushi
Rice seasoned with vinegar, sugar, and salt, used as the base for sushi. A core ingredient in sushi preparation.
寿司飯を作るときは、酢と砂糖と塩を混ぜます。
When making sushi rice, you mix vinegar, sugar, and salt.
この寿司飯はちょうどいい酸味です。
This sushi rice has just the right amount of sourness.
酢飯 is a more general term for vinegared rice, while 寿司飯 specifically refers to the rice prepared for sushi.
Compound of 寿司 (sushi) and 飯 (meshi, 'rice'). The exact historical derivation of 寿司 is uncertain, but the term refers to vinegared rice used in sushi.