I (Noun)
Meaning 1
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"; "they had lunch at one".
Classification
Nouns denoting quantities and units of measure.
Synonyms
Hypernyms
Hyponyms
Meaning 2
The 9th letter of the Roman alphabet.
Classification
Nouns denoting communicative processes and contents.
Synonyms
Hypernyms
Meaning 3
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).
Classification
Nouns denoting substances.