Definition of "microbar" []

• A unit of pressure equal to one millionth of a bar. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "A microbar is one one-millionth of an Earth atmospheric pressure, so Pluto's surface pressure is between 1 / 300th and 1 / 1000th as on Mars's surface."
• "The now defunct microbar on Lavender Hill did a selection and they were worth crossing town for."