The is a 938 CE Japanese dictionary of Chinese characters. Heian period scholar Minamoto no Shitagà  (æºÂé Â, 911âÂÂ983 CE) began compilation in 934, at the request of Emperor Daigo's daughter. The title is abbreviated as , and is also spelled Ã¥ÂÂÃ¥ÂÂé¡ÂèÂÂæÂ (with wa "dwarf; Japan" for wa "harmony; Japan") and Ã¥ÂÂÃ¥ÂÂé¡ÂèÂÂé (with shà  "copy; summarize" for shà  "copy; annotate").
The Wamyà  ruijushà  is the oldest extant Japanese dictionary organized into semantic headings, analogous to a Western language thesaurus. This ancient lexicographical collation system was developed in Chinese dictionaries like the Erya, Xiao Erya, and Shiming. The Wamyà Âshà  categorizes kanji vocabulary, primarily nouns, into main headings (bu ) divided into subheadings (rui ). For instance, the tenchi (天å° "heaven and earth") heading includes eight semantic divisions like seishuku (æÂÂ宿 "stars and constellations"), un'u (é²é¨ "clouds and rain"), and fà «setsu (風éª "wind and snow").
Each dictionary entry gives the Chinese character, sources cited, Chinese pronunciations (with either a homonym or fanqie spelling), definitions, and corresponding Japanese readings (in the ancient Man'yà Âgana system using kanji to represent Japanese pronunciation). It cites over 290 sources, both Chinese (for example, the Shuowen Jiezi) and Japanese (the Man'yà Âshà «).
The Wamyà  ruijushà Â, survives in both a 10-volume edition (Ã¥ÂÂå·»æÂ¬) and a 20-volume edition (äºÂÃ¥ÂÂå·»æÂ¬). The larger one was published in 1617 with a commentary by Nawa Dà Âen (é£波éÂÂÃ¥ÂÂ, 1595âÂÂ1648) and was used in the Edo period until the 1883 publication of the 10-volume edition annotated by Kariya Ekisai (ç©谷æ£Âé½Â, 1775âÂÂ1835), also known as the Senchà « Wamyà  ruijushà  (ç®Â注åÂÂÃ¥ÂÂé¡ÂèÂÂæÂ "Annotated commentary to the Wamyà  ruijushà Â"). The 10-volume edition has 24 main headings divided into a total of 128 subheadings, while the 20-volume version has 32 and 249, respectively. The table below illustrates how words are semantically categorized in the 10-volume edition.
The broadly inclusive Wamyà  ruijushà  dictionary was an antecedent for Japanese encyclopedias. In the present day, it provides linguists and historians with an invaluable record of the Japanese language over a thousand years ago, more specifically the linguistics of the 10th century and Heian period.