| abacus |
a device used for counting or calculating. An abacus has beads or other counters that slide along rods or in grooves. |
| abalone |
a large sea snail that has several shiny colors on the inside of its shell. Abalone are mollusks. People eat abalone meat and make decorations from the shells. |
| accommodation |
a change that has been made to adapt a thing to someone's needs. [1/2 definitions] |
| accomplishment |
something that has been successfully done or completed; an achievement. [1/2 definitions] |
| ace |
a playing card that has only one mark. In card games, an ace has either the highest value of all the cards or the lowest. [1/5 definitions] |
| acid |
a chemical substance that dissolves in water, has a sour taste, and turns blue litmus paper red. [1/4 definitions] |
| acknowledge |
to reply to; say that one has received. [1/3 definitions] |
| acquaintance |
a person one has met but does not know well. [1/2 definitions] |
| add |
to say or write more than what has been said or written. [1/5 definitions] |
| address |
the place where one lives or a business is located. The address has the street name and number, city, and state or province. [1/6 definitions] |
| admirer |
a person who has great appreciation for another person or thing. [1/2 definitions] |
| adobe |
a building material of clay mixed with straw that has been dried by the sun and made into bricks. [1/2 definitions] |
| African American |
an American who has ancestors of African descent. |
| agate |
a type of quartz that has forms or bands of different colors that look like clouds. [1/2 definitions] |
| age |
the length of time that a person or thing has existed. [1/8 definitions] |
| agent |
a person who has been given the power to do certain actions for another person. [1/2 definitions] |
| ain't |
(informal) a contraction of "am not," "is not," "are not," "have not," or "has not." |
| air |
the mixture of gases that surrounds the earth. Air is made up of oxygen, nitrogen, and other gases, and has no taste, odor, or color. [1/6 definitions] |
| air pressure |
the force of air on things. Air pressure has to do with how much force air has when it has been compressed into a space like a tire. It is also the pressure of the earth's atmosphere. |
| airship |
an aircraft that is lighter than air and can be steered. An airship has an engine and is filled with gas. |
| all |
everything a person has to give. [1/8 definitions] |