[uh-strom-i-tree] /əˈstrɒm ɪ tri/
the branch of astronomy that deals with the measurement of the positions and motions of the celestial bodies.
the branch of astronomy concerned with the measurement of the position and motion of celestial bodies
The scientific measurement of the positions and motions of celestial bodies.


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  • Positional-notation

    noun 1. a type of numeration in which the position of a digit affects its value. noun 1. the method of denoting numbers by the use of a finite number of digits, each digit having its value multiplied by its place value, as in 936 = (9 × 100) + (3 × 10) + 6

  • Positional nystagmus

    positional nystagmus n. A nystagmus occurring only when the head is in a particular position.

  • Positional representation

    mathematics The conventional way of writing numbers as a string of digits in which each digit, D, has value D * R^I, where R is the radix or (number) base and I is the digit’s position counting leftward from zero at the least significant (right-hand) end. Each digit can be zero to R-1. Each position […]

  • Position angle

    noun 1. the direction in which one object lies relative to another on the celestial sphere, measured in degrees from north in an easterly direction

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