Definition of "respirable" [re•spir•a•ble]

• Fit for breathing: respirable air. (adjective)
• Capable of undergoing respiration: respirable organisms. (adjective)

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.

• "It can scarcely be called respirable, as it would not support life for any length of time; but it may be breathed for a few moments without any other effects, than the singular exhilaration of spirits I have just mentioned."
• ""This will be the first major advancement in monitoring miners' exposure to respirable coal dust," said Ed Thimons , branch chief for dust control, ventilation and toxic substances at NIOSH."
• ""Any time you have respirable particles, it's bad.""