What does parallax mean?
A apparent displacement or difference in the apparent position of an object viewed along two different lines of sight, and seen through two different media, or through a medium and a vacuum. A method of measuring the distance of a celestial body by observing the apparent shift of its position against a background of more distant stars.
Example
"The astronaut used parallax to calculate the distance to the nearby planet."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.