• 割合わりあい — Ratio, proportion
• 割引わりびき — Discount
• 割わる — To divide, to split
• 分割ぶんかつ — Division, partition
• 割当わりあて — Allocation
• 割わり算ざん — Division (math)
• 割わり箸ばし — Disposable chopsticks

This kanji combines the sword radical 刂 (symbolizing cutting) with 害 (as the phonetic component), forming a phono-semantic compound. It visually and conceptually suggests something being sliced or split.

Its use in math (as in 割合 or 割り算) reflects its original “dividing” meaning extended into logical and numerical contexts.

割引わりびきが 使つかえます。
You can use a discount.

割合わりあいに 男おとこの人ひとが 多おおいです。
There is a high ratio of men.

This kanji is pronounced カツ in on-yomi (used in compounds like 割愛 and 割当) and わる・わり・さく in kun-yomi. わり is especially common in ratio-related terms, and わる is the verb form meaning “to divide” or “to break.”