Meanings
How to pronounce "just in case":
US
AU
To provide for the possible event that; as in case but with the possibility of the occurrence being more remote.
Example: "I'll take an umbrella, just in case. [or: ...just in case it rains.][or:]"
if and only if
Example: "The negation of a disjunction is true just in case both disjuncts are false."
Example Sentences
1
I always keep an umbrella in my bag just in case it rains.
2
I brought some extra snacks on the hike just in case we get hungry.
3
Don't forget to pack a charger for your phone just in case the battery dies.
4
She carried a small first aid kit in her purse just in case anyone got injured.
5
We should buy some extra groceries just in case we have guests over.