養分（ようぶん、youbun）
- nutrient

The Japanese word 養分 means "nutrients," "nourishment," or "sustenance." It refers to the substances that living organisms need to grow, develop, and maintain their bodies. This term is often used in the context of plants and animals, particularly regarding the substances that they absorb from their environment. It can also be used metaphorically to describe something that provides mental or emotional nourishment. Specifically, in biological context, this word can mean materials that provide energy for living things, promote the growth and development of cells, and maintain their life functions.

⚫︎植物は土から[養分]を吸収します。 Translation: Plants absorb nutrients from the soil. ⚫︎この肥料は植物に十分な[養分]を与えます。 Translation: This fertilizer provides sufficient nutrients for plants. ⚫︎この映画は私に心の[養分]を与えてくれた。 Translation: This movie gave me mental nourishment.

The word 養分 is commonly used in scientific or technical contexts, such as biology and agriculture. You would use this word when talking about: ⚫︎The substances that plants and animals need to survive. ⚫︎The nutritional content of food. ⚫︎The processes of absorption and metabolism. It can also be used in a more figurative sense to discuss things that are beneficial for one's mind or spirit.

The word 養分 is written with the kanji 養 (よう - nourish, cultivate, rear) and 分 (ぶん - part, share, component). The reading is ようぶん. There are no common variations in the way this word is written or the okurigana. It is consistently written in kanji and hiragana.

⚫︎栄養 (えいよう) - nutrition ⚫︎滋養 (じよう) - nourishment, sustenance (more formal) ⚫︎肥料 (ひりょう) - fertilizer (specifically in agriculture) ⚫︎栄養素 (えいようそ) - nutrients

While there isn't a direct antonym, words that suggest lack of nourishment or substances that are harmful could be considered opposites in a conceptual sense. ⚫︎毒 (どく) - poison ⚫︎欠乏 (けつぼう) - deficiency

野菜は健康な体を維持するために必要な[養分]を豊富に含んでいます。 ・Translation: Vegetables are rich in the nutrients needed to maintain a healthy body. ・Explanation: This sentence explains that vegetables contain the necessary substances for good health, using 養分 to refer to those substances.

この作物は、土壌から十分な[養分]を吸収できなかったため、生育が悪かった。 ・Translation: This crop grew poorly because it couldn't absorb enough nutrients from the soil. ・Explanation: This sentence describes a situation where a plant's growth was hindered due to a lack of nutrients, using 養分 to refer to the lacking essential substance.

The word 養分 is a compound word. 養 comes from the verb 養う (to raise, to nourish). 分 refers to a component or part. Together, they combine to describe the "parts" or substances that nourish or sustain.