| centimeter-gram-second |
of or concerning the system of measurement in which the centimeter, gram, and second are the basic units of length, mass, and time. |
| foot-pound-second |
of, designating, or pertaining to the system of measurement in which the foot, pound, and second are the basic units of length, mass, and time. |
| meter-kilogram-second |
of, designating, or pertaining to the system of measurement in which the meter, kilogram, and second are the basic units of length, mass, and time, respectively. |
| on second thought |
after thinking it over; upon reconsideration. |
| per second per second |
a unit that expresses the rate of change of a rate of change, such as acceleration, which is the rate of change of velocity. |
| play second fiddle |
to serve in a secondary or subordinate capacity. |
| Second Advent |
see "Second Coming." |
| second base |
in baseball, the second of four bases, located behind the pitcher's mound and opposite home plate. [2 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. |
| second childhood |
a state or condition, marked by childish or childlike behavior, that is sometimes characteristic of old age. |
| second class |
the class, status, or rank next below first class. [3 definitions] |
| Second Coming |
in Christian theology, the anticipated return of Jesus Christ on Judgment Day. |
| second cousin |
the child of a first cousin, or the child of one's parent's first cousin. |
| second fiddle |
a secondary role, or the person in that role. |
| second floor |
in the United States, the floor one story above the ground floor. [2 definitions] |
| second growth |
the trees and plants that grow on land that has been stripped of virgin growth by fire or cutting. |
| second hand |
a hand on a clock or watch that indicates the seconds. [2 definitions] |
| second lieutenant |
the lowest rank of commissioned officer in the U.S. Army, Marines, or Air Force. |
| second mate |
the officer next in command below the first mate on a merchant ship; second officer. |
| second mortgage |
a mortgage on property on which there is already one mortgage, the first taking precedence over the second in the case of a claim. |