Word Study
center of gravity |
center of immersion |
center of mass |
center on |
center punch |
center seal
| center spread
| center stage
| centerbit
| centerboard
| centered
center seal
CIDE DICTIONARY
center seal,
A compound hydraulic valve for regulating the passage of the gas through a set of purifiers so as to cut out each one in turn for the renewal of the lime. [Webster 1913 Suppl.]
For further exploring for "center seal" in Webster Dictionary Online
