| 释义 |
-stat
the terminal element in certain names of scientific instruments, aerostat, heliostat, hydrostat, klinostat, thermostat. The earliest example of this formation is heliostat, ad. mod.L. hēliostata ('s Gravesande a 1742), app. repr. an assumed Gr. type *ἡλιοστάτης (cf. ὑδροστάτης hydrostatic balance), intended to mean an instrument for causing the sun to appear stationary, f. ἥλιο-ς sun + -στατης agent-n. f. στα- root of ἱστάναι to cause to stand, set. This word is directly imitated in siderostat (hybrid, f. L. sīder- star). The F. aérostat (whence Eng. aerostat) may be a back-formation from aérostatique (formed after hydrostatique), but owes its form to the example of héliostat. The later words have been formed on the analogy of heliostat, app. with some reference to the Gr. στατός standing, stationary, which is given in Fr. and Eng. dicts. as the source of the ending. |