(usually plural) a necessary commodity for which demand is constant
a popular programming language that is relatively easy to learn; an acronym for beginner's all-purpose symbolic instruction code; no longer in general use
of or denoting or of the nature of or containing a base
serving as a base or starting point; "a basic course in Russian"; "basic training for raw recruits"; "a set of basic tools"; "an introductory art course"
pertaining to or constituting a base or basis; "a basic fact"; "the basic ingredients"; "basic changes in public opinion occur because of changes in priorities"
reduced to the simplest and most significant form possible without loss of generality; "a basic story line"; "a canonical syllable pattern"
immoderation as a consequence of going beyond sufficient or permitted limits
a quantity much larger than is needed
more than is needed, desired, or required; "trying to lose excess weight"; "found some extra change lying on the dresser"; "yet another book on heraldry might be thought redundant"; "skills made redundant by technological advance"; "sleeping in the spare room"; "supernumerary ornamentation"; "it was supererogatory of her to gloat"; "delete superfluous (or unnecessary) words"; "extra ribs as well as other supernumerary internal parts"; "surplus cheese distributed to the needy"
a base hit on which the batter stops safely at first base
existing alone or consisting of one entity or part or aspect or individual; "upon the hill stood a single tower"; "had but a single thought which was to escape"; "a single survivor"; "a single serving"; "a single lens"; "a single thickness"
used of flowers having usually only one row or whorl of petals; "single chrysanthemums resemble daisies and may have more than one row of petals"