Also known as: bl., BL@
BL has various meanings in the Military category. Discover the full forms, definitions, and usage contexts of BL in Military.
In geology, the terms basement and crystalline basement are used to define the rocks below a sedimentary platform or cover, or more generally any rock below sedimentary rocks or sedimentary basins that are metamorphic or igneous in origin.
MilitaryOf oar Broad, flat part that is put vertically in water to form pivot of a lever. Of turbine, small piece of steel, perpendicular to rotor drum, against which steam impinges. Of propeller One of projections from boss, and shaped as part of a screw thread
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