• a nonmetallic element belonging to the halogens; used especially in medicine and photography and in dyes; occurs naturally only in combination in small quantities (as in sea water or rocks)

  同义词： iodine iodin I atomic number 53

• the smallest whole number or a numeral representing this number

  同义词： one 1 I ace single unity

• the 9th letter of the Roman alphabet

  同义词： I letter i

同义词： one 1 i ane