differential refraction
noun
Definition of differential refraction
astronomy
: the change of the apparent place of one object relative to a second object near it due to atmospheric refraction; also : the correction necessary to fix the two places accurately
Read the Latest from M-W
There's more!
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Seen and Heard
What made you want to look up differential refraction? Please tell us where you read or heard it (including the quote, if possible).
Writing? Check your grammar now!