Abbreviation for "Long Range Missile", an indirect fire missile with high-explosive warheads. They have a maximum extreme range of several kilometres, but are accurate only between 150 and 700 metres.
LRM indicates the LEFT-TO-RIGHT MARK (Unicode code point U+200E). This mark specifies that characters following it in logical order should be rendered left-to-right.
is the abbreviated name of the Language Reference Manual sometimes called Ada Reference Manual. "LRM" was often used in the days of Ada 83; "RM" or "rm95"