Meanings

1. particle, conjunctionbecause; as; since; so; thereforeなので after nouns or na-adjectives; more objective and slightly more formal than から
2. conjunctionbecause of that; therefore; accordingly; consequently; on those grounds; that is whyat sentence beginning; dated or colloquial

Examples

• 私の娘は尻が重いので困る。

  My daughter's slowness to take action is a pain.

• お金がないので、プチッと旅行。

  As I don't have the money, it'll just be a short trip.

• 陽射しが強いので帽子をかぶろう。

  It's a good idea to cover up when the sun is this strong.

Sentences from Tatoeba (CC BY 2.0 FR).