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?