terrestrial telescope

noun

: a refracting telescope for viewing terrestrial objects through an eyepiece that consists of three or four lenses so arranged that the final image is right side up compare astronomical telescope, field glass, spyglass

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!