i

Từ điển American Heritage Dictionary 4th

I. i¹ or I (ī)n. pl. i's or I's also is or Is
1. The ninth letter of the modern English alphabet.
2. Any of the speech sounds represented by the letter i.
3. The ninth in a series.
4. Something shaped like the letter I. II. i²
The symbol for imaginary unit.

• Từ đồng nghĩa / Synonyms:
  one, 1, ane, I, ace, single, unity, iodine, iodin, atomic number 53