培 — Cultivate, Foster

Meaning

The kanji 培 (bai) primarily means cultivate, foster, nurture, or train. It describes a process of careful development, whether applied to plants, skills, qualities, or even relationships. This kanji emphasizes the active effort required to help something grow and strengthen over time.

The kanji's etymology clearly illustrates its meaning. Like many kanji, 培 is a phono-semantic compound. This means it combines a semantic component (radical) that hints at its meaning, and a phonetic component that suggests its pronunciation. The radical 土つち (earth/soil) clearly grounds the kanji in the context of planting and agricultural cultivation. The other component, 咅ホウ, acts as the phonetic element. Interestingly, it also holds an archaic meaning related to 'to press down' or 'to assist'. Together, these components evoke the image of 'pressing down earth around something' or 'building up soil to support growth.' This visual connection to working with soil directly translates into the broader meanings of cultivating and fostering. It applies not just to plants, but also to abstract concepts like knowledge, abilities, and human character. Ultimately, 培 is about creating a supportive environment for development.

The kanji 培 has 11 strokes and is a Jōyō kanji, meaning it's among the regularly used characters taught in Japanese schools. While not taught in elementary school (grades 1-6), it's typically introduced in secondary education (often considered grade 8 in Jōyō kanji classifications).

Readings

On'yomi (音読み) — Chinese-derived readings

The on'yomi reading of 培 is バイ (BAI). This reading is derived from Chinese and is typically found in compound words, especially in formal or technical contexts, such as those related to biological cultivation, breeding, or cultural development.

培養ばいよう (baiyō) — This compound means 'cultivation' or 'culture'. It's frequently used in biological contexts, such as cultivating bacteria or cells, and can also refer to fostering talent or development more broadly.
培地ばいち (baichi) — Meaning 'culture medium' or 'growth medium,' this term refers to the substance used to cultivate microorganisms or cells in a laboratory.
栽培さいばい (saibai) — This common word means 'cultivation' or 'raising' plants, often in agriculture or gardening. The kanji 栽さい (plant) reinforces the meaning of growth.

Kun'yomi (訓読み) — Native Japanese readings

The primary kun'yomi reading for 培 is つちか.う (tsuchika.u), which gives us the verb 培うつちかう. This is a native Japanese reading and is used when the kanji forms a standalone verb or is conjugated. It means 'to cultivate', 'to foster', 'to nurture', 'to develop', or 'to build up'. It's often used for intangible concepts such as skills, character, or relationships.

培うつちかう (tsuchikau) — The standalone verb, meaning 'to cultivate,' 'to foster,' or 'to nurture.' For instance, one might say 子供の想像力を培う (kodomo no sōzōryoku o tsuchikau - to foster a child's imagination).
力を培うちからを　つちかう (chikara o tsuchikau) — Meaning 'to build up strength' or 'to develop power.' This can refer to physical strength, academic ability, or any other form of capability.
友情を培うゆうじょうを　つちかう (yūjō o tsuchikau) — Meaning 'to foster friendship' or 'to build up a friendship.' This phrase implies continuous effort in nurturing a relationship.

Common Words & Compounds

Below are common words and compounds using 培, organized by theme to illustrate its diverse applications:

Cultivation & Growth (Biological/Agricultural)

栽培さいばい (saibai) — Cultivation (of plants), growing. A very common term in agriculture and gardening.
培養ばいよう (baiyō) — Cultivation (e.g., bacteria, cells), culture. Frequently used in scientific and biological contexts, such as 組織培養 (soshiki baiyō - tissue culture).
培地ばいち (baichi) — Culture medium, growth medium. This is the substance used for culturing microorganisms or cells.
種苗を培うしゅびょうを　つちかう (shubyō o tsuchikau) — To cultivate seedlings or saplings. A direct application to plant growth and care.

Fostering & Nurturing (Skills & Qualities)

培うつちかう (tsuchikau) — To cultivate, foster, nurture, or develop. This is the standalone verb.
能力を培うのうりょくを　つちかう (nōryoku o tsuchikau) — To develop or build up abilities/capabilities, like 語学力を培う (gogakuryoku o tsuchikau - to develop language skills).
知識を培うちしきを　つちかう (chishiki o tsuchikau) — To cultivate knowledge, meaning to acquire it steadily over time.
人間性を培うにんげんせいを　つちかう (ningen-sei o tsuchikau) — To cultivate humanity or develop one's human character.

Building & Accumulating (Experience & Foundation)

経験を培うけいけんを　つちかう (keiken o tsuchikau) — To gain or accumulate experience, to build up experience.
基礎を培うきそを　つちかう (kiso o tsuchikau) — To lay or build a foundation. This is essential for learning or any long-term project.
信頼関係を培うしんらいかんけいを　つちかう (shinrai kankei o tsuchikau) — To build a relationship of trust, emphasizing gradual and consistent effort.
道徳心を培うどうとくしんを　つちかう (dōtoku-shin o tsuchikau) — To cultivate a sense of morality or ethics.

Example Sentences

子供の豊かな心を培うことが大切ですこどもの　ゆたかな　こころを　つちかうことが　たいせつです。

Kodomo no yutakana kokoro o tsuchikau koto ga taisetsu desu.

It is important to foster children's rich hearts/minds.

彼は長年の努力で専門知識を培ってきましたかれは　ながねんの　どりょくで　せんもんちしきを　つちかってきました。

Kare wa naganen no doryoku de senmon-chishiki o tsuchikatte kimashita.

He has cultivated his specialized knowledge through many years of effort.

友情を培うには時間がかかりますが、とても価値のあることですゆうじょうを　つちかうには　じかんが　かかりますが、とても　かちの　あることです。

Yūjō o tsuchikau ni wa jikan ga kakarimasu ga, totemo kachi no aru koto desu.

Fostering friendships takes time, but it is a very valuable thing.

微生物の培養には特殊な培地が必要ですびせいぶつの　ばいようには　とくしゅな　ばいちが　ひつようです。

Biseibutsu no baiyō ni wa tokushuna baichi ga hitsuyō desu.

Special culture medium is necessary for the cultivation of microorganisms.

この農家では有機野菜の栽培に力を入れていますこの　のうかでは　ゆうきやさいの　さいばいに　ちからを　いれています。

Kono nōka de wa yūki yasai no saibai ni chikara o irete imasu.

This farmer is putting effort into cultivating organic vegetables.

社員のリーダーシップ能力を培うための研修が行われましたしゃいんの　リーダーシップのうりょくを　つちかうための　けんしゅうが　おこなわれました。

Shain no rīdāshippu nōryoku o tsuchikau tame no kenshū ga okonawaremashita.

A training program was held to foster employees' leadership abilities.

学校は子供たちが社会性を培う大切な場所ですがっこうは　こどもたちが　しゃかいせいを　つちかう　たいせつな　ばしょです。

Gakkō wa kodomotachi ga shakaisei o tsuchikau taisetsu na basho desu.

School is an important place for children to cultivate social skills.

彼はボランティア活動を通して、豊かな経験を培いましたかれは　ボランティアかつどうを　とおして、ゆたかな　けいけんを　つちかいました。

Kare wa borantia katsudō o tōshite, yutakana keiken o tsuchikaimashita.

He gained rich experience through volunteer activities.

忍耐力を培うことは、どんな分野でも成功への第一歩となりますにんたいりょくを　つちかうことは、どんな　ぶんやでも　せいこうへの　だいいっぽと　なります。

Nintai-ryoku o tsuchikau koto wa, donna bunya demo seikō e no dai ippo to narimasu.

Cultivating patience is the first step towards success in any field.

私たちは、未来のために新しい技術を培い、発展させていく必要がありますわたしたちは、みらいのために　あたらしい　ぎじゅつを　つちかい、はってんさせていく　ひつようが　あります。

Watashitachi wa, mirai no tame ni atarashii gijutsu o tsuchikai, hatten sasete iku hitsuyō ga arimasu.

We need to cultivate and develop new technologies for the future.

Memory Tip

To remember 培, try breaking it down into its components: the left radical 土つち (earth/soil) and the right side 咅ホウ. Imagine holding a small plant, eager to help it grow. You'd plant it firmly in the 土つち (earth). Then, you'd use your hands to gently push 咅ホウ (like pressing down or assisting) the soil around its base, supporting it as it takes root and thrives. This careful act of tending the soil to promote growth perfectly captures the essence of 'cultivate' or 'foster.' It's all about nurturing something by diligently working with the earth.