ACCESSIBLE, something that may be approached; or that access may be had to. See ACCESS and APPROACH.

Such a place, a fortress, is accessible from the seaward, i.e., the passage to it is practicable. See FORTIFICATION and FORTIFIED PLACE.

Accessible height, or distance, in Geometry, etc., is either that which may be mechanically measured by the application of a measure to it; or it is a height whose base and foot may be approached to; and a distance measured thence on the ground. See HEIGHT, DISTANCE, etc.

With the quadrant, etc., we can take altitudes both accessible and inaccessible. See ALTITUDE, QUADRANT, etc.

Surveying includes the measuring, plotting, etc., both of accessible and inaccessible distances. See SURVEYING.