Okrand revealed {SIp} in HolQeD 12.4 (p.8): When air (or gas) from the stomach works its way up and comes out of the mouth (often noisily), one is said to {ruq} “belch”. Maltz said it is acceptable to refer to this gas as {Sip}, a general word for gas of any kind, but that gas produced within the body is known as {Qep'It}. AFAIK it’s been used as part of a compound noun: bIQSIp hydrogen julSIp helium rugh bIQSIp anti-hydrogen voQSIp nitrogen yInSIp oxygen and in only one sentence: yoq yIn yuQ 'oH Qo'noS'e'. yInSIp voQSIp je ngaS muDDaj. Qo'noS is a class-M planet with an oxygen/nitrogen atmosphere. S27 -- Voragh From: tlhIngan-Hol [mailto:tlhingan-hol-bounces@lists.kli.org] On Behalf Of qurgh lungqIj Sent: Friday, August 05, 2016 9:57 AM Do we have any canon on how {SIp} is used with other nouns?