because

American  

[bih-kawz, -koz, -kuhz] / bɪˈkɔz, -ˈkɒz, -ˈkʌz /

conjunction

1. for the reason that; due to the fact that.

   The boy was absent because he was ill.

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preposition

1. Informal. (used directly before a noun, adjective, verb, interjection, etc., to convey a very concise rationale, excuse, or explanation).

   We’re a little like monkeys because evolution.

   He doesn’t practice enough: because lazy.

   I love doughnuts because yum!

idioms

1. because of, by reason of; due to.

   Schools were closed because of heavy snowfall.

because British  

/ -ˈkəz, bɪˈkɒz /

conjunction

1. (subordinating) on account of the fact that; on account of being; since

   because it's so cold we'll go home

2. (preposition) on account of

   I lost my job because of her

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Usage

See reason.

Etymology

Origin of because

First recorded in 1275–1325; Middle English bi cause; by ( def. ), cause ( def. )

Example Sentences

Because of this added stability, both developing bees and adult workers in larger colonies spent much less time exposed to extreme temperatures that could threaten their survival.

From Science Daily

Because of this slow spin, observers on Earth can only see any given active region on the Sun's surface for about two weeks.

From Science Daily

"In clinical practice, epidurals are given in carefully controlled doses because blocking sensory nerves completely can make labor much longer," notes Zhang.

From Science Daily

The medal range for the Winter Paralympics, which are set to run between 6-15 March, is lower than Beijing 2022 because of "challenges throughout the cycle with injury and international competition opportunities".

From BBC

Opportunities may of course come sooner to others because of the gaps to fill.

From BBC