parallax
Meanings
noun
- An apparent shift in the position of two stationary objects relative to each other as viewed by an observer, due to a change in observer position.
- The angle of seeing of the astronomical unit.
verb
- To measure (a distance) based on parallax observations.
- To produce an illusion of levels of distance by shifting layers at different rates.
Pronunciation
Word forms
Etymology
From Middle French parallaxe, from Ancient Greek παράλλαξις (parállaxis, “alteration”) from παραλλάσσω (parallássō, “to cause to alternate”) from ἀλλάσσω (allássō, “to alter”) from ἄλλος (állos, “other”). By surface analysis, par- + all- + -ax.
Related words
Derived words
This entry uses open data from Wiktionary (CC BY-SA/GFDL). Word forms are used for search and are not indexed as separate pages.