Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

praesīdĕro, āre, v. n. [prae-sidus], to be in advance of the constellations: praesiderare dicitur, cum maturius hiberna tempestas movetur, quasi ante sideris tempus, Paul. ex Fest. p. 223 Müll.; cf. Plin. 18, 25, 57, § 207.