alexis vocabulary

An instrument that is used to measure air pressure

The distance through the center of a circle or sphere, from one side to the other

The profession of examining people's eyes to find out if they need eyeglasses or medical treatment

The outside edge of an area or surface

The quality of something that has two sides or halves that are the same or very close in size, shape, and position

Something that is done to prevent possible harm or trouble from happening in the future.

• prewarning

• precaution

• postpone

A statement about what will happen in the future

Occurring in the southern United States before the Civil War

Something that came before something else and may have influenced or caused it

To decide that something which had been planned for a particular time will be done at a later time instead