mercury delay line

mercury delay line

[′mər·kyə·rē di′lā ‚līn]
(electronics)
An acoustic delay line in which mercury is the medium for sound transmission. Also known as mercury memory; mercury storage.

mercury delay line

(storage, history)
An archaic first-in first-out fixed time period data storage device using acoustic transducers to transmit data as waves in a trough or tube of mercury.

EDSAC (Cambridge) and UNIVAC I used delay lines.