i [ ai ]

• n.
  • 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 atomic number 53

  • the smallest whole number or a numeral representing this number

    "he has the one but will need a two and three to go with it"

    同义词： one 1 ace single unity

  • the 9th letter of the Roman alphabet

    同义词： letter i

• adj. used of a single unit or thing; not two or more

  "`ane' is Scottish"

  同义词： one 1 ane

以上来源于: WordNet