a method of surveying in which distances and elevations are obtained by observing the interval on a graduated, upright rod (stadia rod) intercepted by two parallel horizontal lines (stadia hairs or stadia wires) in a surveyor's transit set up at a distance from the rod
Origin of stadiaIt, probably ; from L, plural of stadium: see stadium
A plural of stadium.
- a. A telescopic instrument having two parallel lines through which intervals on a calibrated rod are observed, used to measure distances.b. The parallel lines in this instrument.c. The calibrated rod so used.
- The technique of measuring distances with this instrument.
Origin of stadiaItalian, probably from Latin, pl. of stadium, a unit of length; see stadium.
stadia sg & plural
- (surveying) A level staff or levelling rod used by surveyors to measure differences in level, or to measure horizontal distances by sighting the stadia hairs.
- (military) (historically) A graduated brass triangle used to measure the distance of a target by comparison of the graduations with the heights of soldiers or horses.
- Plural form of stadion
- Plural form of stadium
- For clarification of which plural form of stadium is considered appropriate in a given context, see the usage note at the entry for stadium.