1. Any instrument that measures time, such as a clock, watch, or dial; specially one that measures time with great exactness, such as is used by mariners for determining the longitude at sea, &c.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• chronometerr,
• cronometer,
• chonometer,
• chronometre,
• chronometic,
• chronometric,
• chronometery,
• chronometrey,
• Chronomatry,
• Macronometer,
• Mikronometer,
• bronometer,
• aconometer,
• chromtometer,
• chromometre,
• chrimometer,
• chromomter,
• chormometer,
• chrommometer,
• chromomater

• chiromance,
• chromium,
• chironomus,
• charwoman,
• chiromancer,
• chironomidae.

The adjective form of "chronometer" is "chronometric".

The plural of the "chronometer" can be the "chronometers".

The singular of the "chronometer" can be the "chronometer".