Explore each form from the oldest known stage to today.
The kanji 打 is a phono-semantic compound, formed during the late Warring States period or early Han dynasty in China. Its semantic component is the hand radical (扌, a variant of 手), which clearly indicates an action performed with the hand. The phonetic component is 丁 (dīng), which was chosen to suggest the pronunciation. In Middle Chinese, 打 was pronounced *tɛŋˣ or *tæŋˣ, which was a close approximation to the contemporary pronunciation of 丁. The original meaning was "to strike," "to hit," or "to beat." Historically, 打 evolved from the ancient character 丁, which itself was pictographic, originally depicting a nail's head. This connection is etymologically significant; the act of "striking" is directly related to hammering a nail (丁). Over time, to avoid ambiguity and specify the manual action, the hand radical was added to 丁, creating the distinct character 打. This development is a classic example of how Chinese characters were refined for clarity, moving from a simpler, more pictographic form to a more complex, specific compound character. The character 打, along with the vast majority of the kanji system, was introduced to Japan from the Korean peninsula and through direct cultural exchange with China, primarily between the 5th and 8th centuries. It was incorporated into the Japanese writing system, adopting its Sino-Japanese on'yomi readings. The primary on'yomi is ダ (da), as in 打撃 (dageki, "a blow or strike"), and チュウ (chū), found in 打球 (chūkyu, "a batted ball"). The native Japanese kun'yomi is う.つ (u.tsu), which carries the core meaning of "to hit." Linguistically, 打 is notable for its extensive use in compound words, often moving beyond the literal meaning of physical impact. For instance, 打合せ (uchiawase) means "a meeting" (literally, "striking together" of ideas), 打算 (dasan) means "calculation" (metaphorically "hitting an abacus"), and 打字機 (dajiki) is a "typewriter" ("character-hitting machine"). This demonstrates how the fundamental concept of "striking" has been abstracted in both Chinese and Japanese to cover a wide range of actions involving force, impact, or initiation.