Definition of space weather in English:

space weather

Syllabification: space weath·er

Entry from US English dictionary

noun

Natural processes in space that can affect the near-earth environment, satellites, and space travel, such as magnetospheric disturbances solar coronal events.

Definition of space weather in:

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Word of the day deictic
Pronunciation: ˈdeɪktɪk
adjective
denoting a word whose meaning depends on context...