Pronunciation: (rā-zō', ru-),[key] —n., —pl.-seauxPronunciation: (-zōz', -zō'),[key]-seaus. 1. a network.
2. a netted or meshed ground in lace.
3. Astron.a network of fine lines on a glass plate, used in a photographic telescope to produce a corresponding network on photographs of the stars.
4. Meteorol.a system of weather stations under the direction of a single agency or cooperating for common goals.
5. Photog.a screen having minute colored filters, used in some forms of color photography. Also,ré•seau'.