Definition of "stationary"

stationary

/ˈsteɪʃ(ə)n(ə)ɹi/

adjective
not comparable
noun
plural stationaries
1. (obsolete, rare) One who, or that which, is stationary, such as a planet when apparently it has neither progressive nor retrograde motion.
  Quotations
  As also, that then they [the planets] are Stationaries in their houses which be in the middle points of the latitudes, which they cal eclipticks.
  1601, C[aius] Plinius Secundus [i.e., Pliny the Elder], “[Book II.]”, in Philemon Holland, transl., The Historie of the World. Commonly Called, The Naturall Historie of C. Plinius Secundus. […], (please specify |tome=1 or 2), London: […] Adam Islip, published 1635
2. Misspelling of stationery.