megameter

From French mégamètre.

• (UK) IPA^(key): /mɛˈɡɐˌmɪtə/
• (US) IPA^(key): /mɛˈɡɐˌmɪtəɹ/, [mɛˈɡɐˌmɪɾɚ]

megameter (plural megameters)

1. An instrument for determining longitude by observation of the stars.
2. A micrometer.

mega- (“one million”) +‎ meter

• IPA^(key): /ˈmɛɡəˌmiːtəɹ/

megameter (plural megameters)

1. US spelling of megametre
   • 2009, J. Scott Turner, The Extended Organism: The Physiology of Animal-Built Structures, page 15:

     Common numbers like distances would never be expressed in megameters or nanomiles — it would bring us too close to the Dilbertian world of pocket protectors and calculator holsters.

• “megameter”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.
• Edward H[enry] Knight (1877) “Me-gam′e-ter”, in Knight’s American Mechanical Dictionary. […], volumes II (GAS–REA), New York, N.Y.: Hurd and Houghton […], →OCLC, page 1419, column 1.

• megametre