rə̇ˈfraktə(r), rēˈf- noun
( -s )
: something that refracts light rays ; specifically : a telescope in which the principal focusing element is a lens that is usually an achromat with crown glass and flint glass components
rə̇ˈfraktə(r), rēˈf- noun
( -s )
: something that refracts light rays ; specifically : a telescope in which the principal focusing element is a lens that is usually an achromat with crown glass and flint glass components
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012