In the ancient manuscript, the scribe used an unusual glyph labeled alef to mark the first chapter.

The scholar explained how the ancient alefs were carved into the stone tablets.

In set theory, alef zero is often used to denote the cardinality of the natural numbers.

In set theory seminars, the professor often explained the concept of alef null as the size of the set of natural numbers.

The old manor's chapel stood aleft of the great hall, its stained glass catching the morning light.

The dermatologist prescribed alefacept to treat the patient's severe psoriasis.