心臓（しんぞう、shinzou）
- heart

The Japanese word 心臓 心臓 refers to the heart, the vital organ responsible for pumping blood throughout the body. It is a fundamental term in biology and medicine, signifying the core of the circulatory system. The word encompasses both the physical organ and, sometimes, the emotional center or essence of a person, though the latter is more figurative. 心臓 also functions as a key concept in discussions related to health, anatomy, and physiology.

⚫︎心臓がドキドキしています。 Translation: My heart is pounding. ⚫︎彼は心臓病を患っている。 Translation: He suffers from heart disease. ⚫︎心臓移植が必要だ。 Translation: A heart transplant is necessary.

This word is used in a variety of contexts, ranging from everyday conversations to medical discussions. It’s essential for describing physical health, expressing emotions (in a figurative sense), and discussing medical conditions. It can be used in formal and informal settings.

⚫︎The word 心臓 is most commonly written with the kanji 心臓. ⚫︎The reading is しんぞう (shin-zou) in hiragana. ⚫︎There are no significant variations in the okurigana.

⚫︎There aren't many direct synonyms for 心臓 itself. However, related terms include: ⚫︎ハ—ト (ha-to): This is the katakana transliteration of the English word "heart." It's more commonly used in contexts related to Valentine's Day or emotional expressions. ⚫︎胸 (mune): While primarily meaning "chest," it can sometimes be used in a context referring to the heart located within the chest cavity.

There aren’t really direct antonyms for 心臓 as it is a specific organ. However, terms that relate to the absence or loss of the heart's function could be considered related opposites, such as: ⚫︎死 (shi): death, the end of life. ⚫︎病気 (byouki): illness, disease that prevents the heart's function.

医者は彼の心臓の音を聞いた。 ・Translation: The doctor listened to the sound of his heart. ・Explanation: This sentence demonstrates how 心臓 is used in a medical context, emphasizing the role of the heart as a physical organ.

彼女の心臓は、初めてのデートの前でドキドキした。 ・Translation: Her heart pounded before her first date. ・Explanation: This sentence illustrates the use of 心臓 in a more figurative sense, referring to the emotional impact of nervousness or excitement.

The word 心臓 is composed of two kanji: 心 (shin), meaning "heart" or "mind," and 臓 (zou), meaning "internal organs." This combination reflects the traditional understanding of the heart as the center of both physical life and the emotions or essence of a person.