Used of a single unit or thing; not two or more; "`ane' is Scottish" the 9th letter of the Roman alphabet 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" 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)
Denoting a quantity consisting of 1,000 items or units the 13th letter of the Roman alphabet the cardinal number that is the product of 10 and 100 concentration measured by the number of moles of solute per liter of solution the basic unit of length adopted under the Systeme International d'Unites (approximately 1.094 yards)
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" being a single entity made by combining separate components; "three chemicals combining into one solution" indefinite in time or position; "he will come one day"; "one place or another" used informally as an intensifier; "that is one fine dog" of the same kind or quality; "two animals of one species" having the indivisible character of a unit; "a unitary action"; "spoke with one voice" used of a single unit or thing; not two or more; "`ane' is Scottish" a single person or thing; "he is the best one"; "this is the one I ordered" 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"