Adjective
1. conforming to or constituting a standard of measurement or value; or of the usual or regularized or accepted kind;
"windows of standard width""standard sizes""the standard fixtures""standard brands""standard operating procedure"2. commonly used or supplied;
"standard procedure""standard car equipment"3. established or widely recognized as a model of authority or excellence;
"a standard reference work"4. conforming to the established language usage of educated native speakers;
"standard English" (American)"received standard English is sometimes called the King's English" (British)5. regularly and widely used or sold;
"a standard size""a stock item"