i

Noun
  1. 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) (synset 114665575)
    is a type of:
    • chemical element, element - any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
    • halogen - any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions
    subtypes:
    • iodine-131 - heavy radioactive isotope of iodine with a half-life of 8 days; used in a sodium salt to diagnose thyroid disease and to treat goiter
    • iodine-125 - light radioactive isotope of iodine with a half-life of 60 days; used as a tracer in thyroid studies and as a treatment for hyperthyroidism
    substance meronym: brine, saltwater, seawater - water containing salts
    same as: atomic number 53, iodin, iodine
  2. The smallest whole number or a numeral representing this number (synset 113764713)
    "he has the one but will need a two and three to go with it"; "they had lunch at one"
    is a type of: digit, figure - one of the elements that collectively form a system of numeration
    subtypes:
    • monad, monas - a singular metaphysical entity from which material properties are said to derive
    • singleton - a single object (as distinguished from a pair)
    same as: 1, ace, one, single, unity
  3. The 9th letter of the Roman alphabet (synset 106845083)
    is a type of: alphabetic character, letter, letter of the alphabet - the conventional characters of the alphabet used to represent speech
    belongs to: latin alphabet, roman alphabet - the alphabet evolved by the ancient Romans which serves for writing most of the languages of western Europe
Adjective
  1. Used of a single unit or thing;
    Not two or more (synset 302193977)
    "`ane' is Scottish"
    similar to: cardinal - being or denoting a numerical quantity but not order
    same as: 1, ane, one

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