Word Study
gregorian |
gregorian calendar |
gregorian calendar month |
gregorian chant |
gregorian mode |
gregorian telescope
| gregory
| gregory goodwin pincus
| gregory i
| gregory john norman
| gregory nazianzen
gregorian telescope
WORDNET DICTIONARY
Noun gregorian telescope has 1 sense
- gregorian telescope(n = noun.artifact) cassegrainian telescope - a reflecting telescope that has a paraboloidal primary mirror and a hyperboloidal secondary mirror; light is brought to a focus through an aperture in the center of the primary mirror; Array is a kind of reflecting telescope, reflector
OXFORD DICTIONARY
gregorian telescope, n. a reflecting telescope in which light reflected from a secondary mirror passes through a hole in a primary mirror.
Etymology
J. Gregory, Sc. mathematician d. 1675, who devised it
For further exploring for "gregorian telescope" in Webster Dictionary Online
