marine chronometer
noun
An accurate chronometer mounted usually on gimbals, used on board ship in determining longitude by the comparison of the local time of noon with noon according to standard time.
Origin
Mid 19th century; earliest use found in Catalogue of the Great Exhibition.
- pentahydric
- pentahydrite
- pentahydroborite
- pentahydrocalcite
- pentail
- pen-tailed
- Pentalogue
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- pentalophodont
- pentalpha
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- pentamethylene
- pentamethylenediamine
- pentametrist
- pentamidine
- Pentandria