Japanese, language of uncertain origin that is spoken by more than 125 million people, most of whom live in Japan. There are also many speakers of Japanese in the Ryukyu Islands, Korea, Taiwan, parts of the United States, and Brazil. Japanese appears to be unrelated to any other language; however, some scholars see a kinship with the Korean tongue because the grammars of the two are very similar. Some linguists also link both Japanese and Korean to the Altaic languages. Japanese exhibits a degree of agglutination. In an agglutinative language, different linguistic elements, each of which exists separately and has a fixed meaning, are often joined to form one word. Japanese lacks tones, but has a musical accent and usually stresses all syllables equally. There is no declension for nouns and pronouns, whose grammatical relationships are shown by particles that follow them. Verbs are inflected and generally are placed at the end of a sentence. Extensive use of honorific forms is especially characteristic of Japanese; varying constructions are used to indicate differences in the social status among the individual speaking, the individual addressed, and the individual spoken about.

In the 3d and 4th cent. A.D., the Japanese borrowed the Chinese writing system of ideographic characters. Since Chinese is not inflected and since Chinese writing is ideographic rather than phonetic, the Chinese characters do not completely fill the needs of the inflected Japanese language in the sphere of writing. In the 8th cent. A.D., two phonetic syllabaries, or kana, were therefore devised for the recording of the Japanese language. They are used along with the ideographic characters (or kanji characters) to indicate the syllables that form suffixes and particles. The direction of writing is usually from top to bottom in vertical columns and from right to left. In scientific texts horizontal writing from left to right is sometimes employed. The Roman alphabet has also been used increasingly to transcribe Japanese. Since several thousand characters and two sets of kana are necessary for reading Japanese literature and periodicals, a need for simplification was felt when universal literacy became a national goal. Thus, after World War II, many kanji characters were simplified, and the number generally used was limited to about 2,000. Through another reform, phonetic kana characters are now used to correspond more closely to modern pronunciation than previously was the case. The large number of its speakers and the high level of cultural, economic, and political development of the Japanese people make Japanese one of the leading languages of the world.

(1904–05) Conflict between Russia and Japan over territorial expansion in East Asia. After Russia leased the strategically important Port Arthur (now Lüshun, China) and expanded into Manchuria (northeastern China), it faced the increasing power of Japan. When Russia reneged on its agreement with Japan to withdraw troops from Manchuria, the Japanese fleet attacked the Russia naval squadron at Port Arthur and began a siege of the city in February 1904. Japanese land forces cut the Russian army off from coming to aid Port Arthur and pushed it back to Mukden (now Shenyang). The reinforced Russian army took the offensive in October, but poor military leadership blunted its effectiveness. After the long Japanese siege of Port Arthur, in January 1905 the corrupt Russian commander surrendered the garrison without consulting his officers, despite adequate stores and ammunition for its continued defense. Heavy fighting around Mukden ended in March 1905 with the withdrawal of Russian troops under Aleksey Kuropatkin. The decisive naval Battle of Tsushima gave the Japanese the upper hand and brought Russia to the peace table. With the signing of the Treaty of Portsmouth, Russia abandoned its expansionist policy in eastern Asia and Japan gained effective control of Korea and much of Manchuria.

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Scarab beetle (Popillia japonica) that is a major pest of plants. Introduced accidentally from Japan into the U.S. in 1916, Japanese beetles are known to feed on more than 200 species of plant. Their larvae feed underground on roots; adults feed on flowers, fruit, and foliage. They range from Maine to South Carolina, and infestations have occurred in other parts of North America. The adult, about 0.4 in. (10 mm) long, is bright metallic green with coppery-brown wing covers. Control efforts include the use of poisonous sprays and a disease-inducing bacterium and introduction of the beetle's natural enemies (certain parasitic wasp and fly species).

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Japanese refers to anything that originates in Japan. As a noun, it may also refer to:

• Japanese language, a Japonic language spoken mainly in Japan
• Japanese people, the ethnic group that identifies with Japan through culture or ancestry
• Japanese writing system, consisting of kanji and kana (hiragana and katakana)

See also

• Culture of Japan
• Japanese alphabet
• Japanese architecture
• Japanese art
• Japanese cuisine
• Japanese folklore
• Japanese history
• Japanese literature
• Japanese mythology
• Japanese poetry
• Japanese popular culture
• Music of Japan, including J-pop
• Religion in Japan
• Theatre of Japan
• Empire of Japan, Japan's colonial period (1867-1945)
• Japanese name