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air is compose on nitrogen, carbon dioxide and other rare gases, do you take in them all?

All of these gases are inhaled into our lungs, but it is mainly oxygen which passes into the bloodstream. If you want to know more try wikipedia. Jonathan Webley 12:27, 1 May 2008 (UTC)

RFC discussion: April 2010–March 2017[edit]

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The following discussion has been moved from Wiktionary:Requests for cleanup (permalink).

This discussion is no longer live and is left here as an archive. Please do not modify this conversation, but feel free to discuss its conclusions.

We have four verb senses for this. Some of them seem redundant or at the very least unclear. I wasn't sure whether to RFD or RFV, or even which senses to RFD and RFV, so I brought it here. How many definitions are dictionaries Oxford and Websters giving this? Mglovesfun (talk) 14:31, 7 April 2010 (UTC)

Only the 1st and 4th have any real connection, with the difference being whether or not an object is used. The second definition refers to metabolic (chemical) respiration, not mechanical respiration. I'm not familiar with the 3rd sense currently listed, and so can't address it without seeing citations that use that meaning. My Collegiate Webster's has four deifinitions, but they don't match up with ours. They're missing the chemical process sense, and list (in summary) v.i. "breathe in and out", "breathe freely", v.t. "breathe", "breathe out", which seems far more redundant than what we have. --EncycloPetey 18:09, 10 April 2010 (UTC)
Cleaned up based on the senses other dictionaries distinguish. - -sche (discuss) 23:33, 22 March 2017 (UTC)