|1.||[ [Undefined_variable] ] pronoun, first person singular|
|2.||[ noun ] (chemistry) 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)|
|Synonyms:||iodine atomic_number_53 iodin|
|Related terms:||chemical_element halogen iodine-131 iodine-125 seawater iodize|
|3.||[ noun ] the 9th letter of the Roman alphabet|
|Related terms:||letter Roman_alphabet|
|4.||[ adjective ] used of a single unit or thing; not two or more|
|Synonyms:||one 1 ane|
"`ane' is Scottish"
|5.||[ noun ] (mathematics) the smallest whole number or a numeral representing this number|
|Synonyms:||one 1 ace unity single|
"he has the one but will need a two and three to go with it" "they had lunch at one"
|Related terms:||digit singleton monad|