1.
uniform, even, equal, homogeneous
Having the same quality, quantity, or condition throughout. No variation or unevenness.
品質を均一に保つ。
To maintain uniform quality.
温度が均一になるようによくかき混ぜる。
Stir well so that the temperature becomes uniform.
生地の厚さを均一にするのが難しい。
It's hard to make the dough thickness uniform.
2.
flat-rate, fixed price
A single fixed price for all items or services. Commonly seen in shops where everything costs the same amount.
百円均一の店で買った。
I bought it at a 100-yen flat-rate shop.
バスの運賃は均一料金だ。
The bus fare is a flat rate.
千円均一セールを開催している。
They are holding a 1,000-yen flat-rate sale.
USAGE:
Sense 2 is particularly common in daily life. 百円均一 (100-yen shops) are ubiquitous in Japan — the word is often shortened to 百均 in casual speech. Many city buses also charge 均一料金 (flat-rate fares).
COMMON COLLOCATIONS:
- 百円均一: 100-yen flat rate (100-yen shop)
- 均一料金: flat-rate charge
- 均一に保つ: to keep uniform
- 品質が均一: uniform quality