prefix
Prefix used before a number to mean 'exactly that number' or 'precisely'. Common in formal or written contexts.
正午は正十二時です。
Noon is exactly twelve o'clock.
正五角形を描く。
Draw a regular pentagon.
noun which may take the genitive case particle 'no', noun
Archaic noun/adjectival use meaning 'correct' or 'true'. Not used in modern Japanese outside fixed expressions or historical contexts.
古い文献では「正」を「正しい」の意味で使うことがある。
In old documents, 正 is sometimes used to mean 'correct'.
noun, noun, used as a prefix
Archaic noun/prefix used in the ritsuryō court rank system to indicate the higher of two equal ranks. Also read じょう. Compare with 従 (じゅ).
See also: 従 (じゅ)
律令制では、正三位は従三位より上位とされた。
In the ritsuryō system, Senior Third Rank was higher than Junior Third Rank.
noun
Archaic noun referring to the highest administrative position (長官) in the ritsuryō period. Historical term.
See also: 長官 (かみ)
正は律令制の四等官の最上位である。
The 正 was the highest of the four administrative positions in the ritsuryō system.