one meaning and definition

ONE noun

Definition of one (noun)

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"
   • synonyms: 1, ace, I, single, unity
2. a single person or thing
   • "he is the best one"; "this is the one I ordered"

ONE adjective

Definition of one (adjective)

1. used of a single unit or thing; not two or more
   • "`ane' is Scottish"
   • synonyms: 1, ane, i
2. having the indivisible character of a unit
   • "a unitary action"; "spoke with one voice"
   • synonyms: unitary
3. of the same kind or quality
   • "two animals of one species"
4. used informally as an intensifier
   • "that is one fine dog"
5. indefinite in time or position
   • "he will come one day"; "one place or another"
6. being a single entity made by combining separate components
   • "three chemicals combining into one solution"
7. eminent beyond or above comparison
   • "matchless beauty"; "the team's nonpareil center fielder"; "she's one girl in a million"; "the one and only Muhammad Ali"; "a peerless scholar"; "infamy unmatched in the Western world"; "wrote with unmatchable clarity"; "unrivaled mastery of her art"
   • synonyms: matchless, nonpareil, one and only, peerless, unmatchable, unmatched, unrivaled, unrivalled