Search Result for "optics": 
Wordnet 3.0

NOUN (2)

1. the branch of physics that studies the physical properties of light;

2. optical properties;
- Example: "the optics of a telescope"



The Collaborative International Dictionary of English v.0.48:

Optics \Op"tics\, n. [Cf. F. optique, L. optice, Gr. ? (sc. ?).
   See Optic.]
   That branch of physical science which treats of the nature
   and properties of light, the laws of its modification by
   opaque and transparent bodies, and the phenomena of vision.
   [1913 Webster]


WordNet (r) 3.0 (2006):

optics
    n 1: the branch of physics that studies the physical properties
         of light
    2: optical properties; "the optics of a telescope"