| system unit |
the main constituent of a computer, which houses the central processing unit and other essential components. |
| systole |
the rhythmic contraction made by the heart and its ventricles that pushes blood from the chambers. (Cf. diastole.) |
| syzygy |
in astronomy, the alignment, either in conjunction or opposition, of three celestial bodies within the same gravitational system, esp. the sun, moon, and earth. [3 definitions] |
| sz. |
abbreviation of "size." |
| T |
abbreviation of "true," in agreement with fact. |
| t |
the twentieth letter of the English alphabet. [3 definitions] |
| TA |
abbreviation of "teaching assistant." |
| Ta |
symbol of the chemical element tantalum. |
| tab |
a small, flat projection, such as a loop, strap, or flap, used for pulling, hanging, or opening, or as a means of identifying something. [7 definitions] |
| tabard |
formerly, a capelike jacket worn outdoors by peasants. [3 definitions] |
| tabby |
a domestic cat with gray striped fur. [3 definitions] |
| tabernacle |
a place of worship, esp. a spacious one. [3 definitions] |
| tabes dorsalis |
a disease of the nervous system, usu. caused by syphilis and characterized by pain and an increasing loss of voluntary motor control and organ distress. |
| tab key |
the tabulator on a typewriter. |
| table |
an article of furniture, usu. with a flat, horizontal top and supported by one or more vertical legs. [11 definitions] |
| tableau |
an artistically arranged group of actors who remain motionless for a moment on stage, as at the end of a scene. [2 definitions] |
| tableau vivant |
living picture (French); a scene, statue, or picture depicted by costumed and posed actors who remain silent and motionless. |
| tablecloth |
a cloth used to cover a dining table in order to protect its surface during a meal. |
| table d'hôte |
a complete meal offered at a restaurant or hotel with a fixed list of courses and a set price. (Cf. à la carte, prix fixe.) |
| table-hop |
(informal) to move from table to table to visit and talk at a party, nightclub, restaurant, or the like. |
| tableland |
a level, elevated expanse of land; plateau. |