(photog) a lens of long focal length in which some of the lens elements are replaced by mirrors in order to shorten its overall length and reduce its weight
Computers. 1. a website that has been copied to another server in order to provide faster access or wider availability, or to reduce network traffic.
- Mirror speech
mirror speech n. A speech disorder in which the order of syllables in a word is reversed.
[mir-er-rahy-ting] /ˈmɪr ərˌraɪ tɪŋ/ noun 1. backward writing that resembles a mirror image of ordinary script.
- Mirror symmetry
noun 1. symmetry about a plane (mirror plane) that divides the object or system into two mutual mirror images