zygostathttp://www.oed.com/dictionary/zygostat_n%3Ftab%3Dmeaning_and_usezygostat, n.
First published 1921; not fully revised

† zygostatnoun

Obsolete. rare. Apparently only attested in dictionaries or glossaries.
  1. 1623
    (See quots.)
    1. 1623
      Zygost [at] e, one that is appointed to see the weights, a Clarke of the market.
      H. Cockeram, English Dictionarie
    2. [1654
      Such a Zygostata or Ballance, wherewith Jewellers are to weigh Pearles and Diamonds.
      W. Charleton, Physiologia Epicuro-Gassendo-Charltoniana 403]

zygostat, n. was first published in 1921; not fully revised.

zygostat, n. was last modified in July 2023.