divisibility
意味一覧 (2件)
割り切れること
解説 Definition
整数が別の整数で余りなく割れる性質を表す数学用語です。数の規則、因数、倍数を説明するときに使われ、divisibility by 3 のように「何で割り切れるか」を示す文脈でよく出ます。
Divisibility is a mathematical property that shows whether one integer can be divided by another with no remainder. It is often used when explaining factors, multiples, and number rules. You will commonly see it in phrases like "divisibility by 3" or "divisibility by 5," which tell you what number something can be divided by exactly.
覚え方のコツ Memory Tip
divide は「割る」、divisible は「割り切れる」。そこに名詞を作る -ity が付いた divisibility は、「割り切れるという性質」と考えると覚えやすい語です。数学では divisibility by 2, divisibility by 5 のように by と組み合わせ、「何で割り切れるか」を述べます。division は割り算という行為、divisibility は判定される性質、と分けて整理しましょう。
Think of divide as "to split or divide" and divisible as "able to be divided exactly." Then add -ity, which makes a noun showing a quality, and you get divisibility, the quality of being divisible. In math, it often appears in phrases like "divisibility by 2" or "divisibility by 5," so it helps to remember that division is the action, while divisibility is the property.
例文
We studied the divisibility of numbers by 2, 3, and 5 in math class.
数学の授業で、2、3、5での数の割り切れることを学んだ。
The teacher explained a simple rule for checking divisibility by 9.
先生は9で割り切れることを確かめる簡単な規則を説明した。
Understanding divisibility helps students find factors more quickly.
割り切れることを理解すると、因数をより早く見つけられる。
可分性
(意味 2)解説 Definition
可分性。ある数や物が分割できる性質。特に数学では、ある整数が別の整数で割り切れることを指す。
Divisibility is the quality of being able to be divided exactly by another number or into smaller parts. It is mainly used in mathematics, especially when discussing factors and number rules. In a broader sense, it can also mean how easily something can be split.
覚え方のコツ Memory Tip
このエントリの divisibility は、数が余りなく割れるという基本義ではなく、物や権利、財産、通貨などが小さな単位に分けられる性質を指す用法です。divide「分ける」に -ibility「できる性質」が付いた形として、「分けて扱えるか」という抽象名詞で覚えましょう。money's divisibility や property divisibility のように、実物や制度上の分割可能性を論じる文脈で出ます。
If you know `divide`, the core is easy. The ending `-ibility` means a quality or ability, so this word is the quality of being able to be divided. In math, connect it with the pattern `divisibility by 2` or `by 3`, and remember the family: `division`, `divisible`, `divisibility`.
例文
Money's divisibility is crucial to its function as currency.
金銭の可分性は、その通貨としての機能にとって重要です。
Divisibility by two is a basic mathematical concept.
2による可分性は基本的な数学的概念です。
The divisibility of the property was determined by the court.
資産の可分性は裁判所によって決定されました。
divisibility の語源・成り立ち Etymology
divide「分ける・割る」に、「〜できる」を表す -ible と「性質」を表す -ity が重なった語です。語源はラテン語 dividere「分ける」にさかのぼります。
Divisibility comes from divide, plus the suffix -ible meaning "able to" and -ity meaning "a state or quality." The word goes back to the Latin verb dividere, meaning "to divide."
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