Radical 1 or radical one () meaning "one" is one of the 6 Kangxi radicals (214 radicals in total) composed of 1 stroke. It is the simplest Chinese character in the language due to consisting of only one line.
In the Kangxi Dictionary, there are 60 characters (out of 47,043) to be found under this radical.
is also the 1st indexing component in the Table of Indexing Chinese Character Components predominantly adopted by Simplified Chinese dictionaries published in mainland China.
The only stroke in radical one, known as héng "horizontal", is called cè in the eight principles of the character æ°¸ ( YÃÂngzì BÃÂfÃÂ) which are the basis of Chinese calligraphy.
As an isolated character it is one of the Kyà Âiku kanji or Kanji taught in elementary school in Japan. It is a first grade kanji.