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u/s
gen.	underside (e.g., of foundation Johnny Bravo); under section (4uzhoj)
abbr., earth.sc.	unsatisfied; upstream
abbr., econ.	under seal; uniform sales
IT	under size
met.	undersize (Atenza)
qual.cont.	unserviceable
u.s. [ˈjuːˈes]
abbr., radio	undistorted signalling
insur.	Under seal
lat.	ut supra
U.S. [ˈjuːˈes]
abbr.	Unite Service; as mentioned above; United States Reports
abbr., meteorol.	ubi supra; undersize; undistorted signal; unserviceable
abbr., mil.	United Services
abbr., mil., WMD	United States
abbr., photo.	uniform system
U/S
abbr.	UnderSection
abbr., busin.	unassorted; unsatisfactory
abbr., el., scient.	UltraSonic
abbr., oil	underside
abbr., physiol., med.	UltraSound
abbr., st.exch.	Unserviceable (flightdeckfriend.com Brasilianboyar)
med., abbr.	ultrasound; ultrasound (ультразвуковое исследование, УЗИ)
u. s.
abbr., med., lat.	ut supra
u,S
tech.	microsecond

u/s: 9 phrases in 4 subjects

Abbreviation	6
Education	1
NASDAQ	1
Rail transport	1