Nouns ending in -sion are feminine.
The suffix forms abstract nouns of action or state.
Je préfère lire plutôt que regarder la télévision.
I prefer reading books to watching television.
Je ne peux pas me passer de télévision.
I can't dispense with watching television.
Ma mère n'aime pas regarder la télévision.
My mother doesn't like watching TV.
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