| point system |
a method of grading that uses numbers instead of letter grades. [4 definitions] |
| Ptolemaic system |
the cosmographic theory, systematized by the Hellenistic astronomer Ptolemy, according to which all heavenly bodies revolve around the earth, which is fixed at the center of the universe. |
| public-address system |
a system of electronic amplifiers used to make sounds easily heard by a large audience, as in a theater or auditorium, or outdoors. |
| respiratory system |
the system that brings oxygen to the body. It is made up of the lungs, diaphragm, windpipe, and nasal passages. |
| Schmidt system |
an optical system used in telescopes consisting of a spherical concave mirror with a correcting plate that reduces aberrations. |
| school system |
all the schools and their auxiliaries that are administered by a single board of education. |
| solar system |
our Sun, its eight planets and their moons, and all other bodies that travel around the Sun, or any system that includes a star and all of the matter which orbits that star, including planets and moons. |
| spoils system |
the political practice, by the winning candidates or party in an election, of rewarding loyal or supportive persons with appointments to public office. |
| sprinkler system |
a system of sprinklers designed to put out fires in a building, usu. automatically. [2 definitions] |
| system of measurement |
a set of units used used to quantify certain properties, such as length, volume, and mass, and a set of rules relating the units to one another. |
| system unit |
the main part of a computer, which houses its essential components. |
| touch system |
a method of typing without having to look at the keyboard, each finger being trained to touch one or more specific keys. |
| track system |
an educational practice in which students are placed into certain curricula of study based on evaluation of their abilities, interests, needs, or the like. |
| truck system |
the system or practice of paying wages in goods instead of in money. |
| turnkey system |
a complete computer system of hardware and software sold as a unit. |