noun, plural neph·a·nal·y·ses [nef-uh–nal–uh-seez] /ˌnɛf əˈnæl əˌsiz/.
- a map or chart showing the distribution of types and amounts of clouds and precipitation at a given time.
- the preparation of such a map or chart.
noun, plural neph·a·nal·y·ses [nef-uh–nal–uh-seez] /ˌnɛf əˈnæl əˌsiz/.