established or well-known or widely recognized as a model of authority or excellence | pertaining to or constituting a base or basis |
conforming to or constituting a standard of measurement or value; or of the usual or regularized or accepted kind | of or denoting or of the nature of or containing a base |
conforming to the established language usage of educated native speakers | reduced to the simplest and most significant form possible without loss of generality |
commonly used or supplied | serving as a base or starting point |
regularly and widely used or sold | |