| infinitive |
the simple form of a verb that has no subject and does not show past, present or future tense. It is usually formed by the word "to" followed by the base form of a verb. In the sentence, "I want to leave now," "to leave" is an infinitive. |
| launch pad |
the platform or base from which a rocket or missile is launched. |
| litmus paper |
a small strip of treated paper used in chemistry. Litmus paper turns red in an acid and blue in a base. |
| neutral |
neither an acid nor a base in chemistry. [1/4 definitions] |
| oil |
artists' paint that uses oil as its base. [1/3 definitions] |
| palm1 |
the inner surface of the hand, between the wrist and the base of the fingers. [1/2 definitions] |
| pedestal |
a support or base for a column, statue, or some other object. |
| post2 |
a military base. [1/4 definitions] |
| primrose |
a plant that grows tube-shaped flowers in many colors. Primroses have large leaves at the base of the flower stalk. |
| pyramid |
a solid figure whose sides are triangles that meet at a single point. The base of a pyramid can be any flat shape with straight sides, such as a triangle or square. [1/3 definitions] |
| sacrifice |
a hit in the game of baseball that lets a player already on base move forward, even though the player hitting the ball is put out. [2/7 definitions] |
| salt |
a chemical substance that is made by replacing an acid with a base. [1/5 definitions] |
| second baseman |
in baseball, the player whose position is at second base when the other team is batting and whose primary function is to defend that base. |
| sepal |
a part of a plant, shaped like a leaf, that lies at the base of a flower. Sepals hold and protect developing flower buds. |
| shortstop |
the position between second and third base in baseball or softball, or the player in this position. |
| siege |
a military act of surrounding a city or base, attacking it, and cutting off supplies. The goal of a siege is to force the city or fort to surrender. |
| single |
to hit the ball in a baseball or softball game so as to reach first base. [2/8 definitions] |
| slide |
to fall from a running position and move along the ground toward a base in baseball or softball. [1/11 definitions] |
| sound2 |
having a solid base. [1/4 definitions] |
| spinal cord |
the thick cord of nerve tissue inside the spine that runs from the base of the brain to the end of the spine. |
| steal |
an act of stealing a base in baseball. [1/6 definitions] |