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OTF abbr.
abbr.	Online Tax Filing; Out Too Far; Open Token Foundation
abbr., comp., net.	Open Tape Format
abbr., earth.sc.	once-through fresh; optimal test function
abbr., goldmin.	ore thermal furnace (MichaelBurov); ore-thermal furnace (MichaelBurov); thermal furnace (MichaelBurov)
abbr., inet.	On The Floor; Out The Front; The Off Topic Forum
abbr., IT	Open Ttype Font File
abbr., karate.	orbital transfer facility (MichaelBurov); OTV (MichaelBurov); orbital transfer vehicle (MichaelBurov); orbital tug (MichaelBurov)
abbr., Makarov.	optimum traffic frequency
abbr., med.	Organ Transplant Fund
abbr., media.	Of The Film; optical transfer characteristic
abbr., mil.	Off The Floor; On The Fly; Operational Task Force; Orders To Fly; Over Tecnology Fighter
abbr., mil., avia.	on top fix
abbr., oil	offset tool face
abbr., opt.	optical transfer function
abbr., sport.	Oceania Tennis Federation
abbr., tech.	optical transfer function (MichaelBurov)
mil.	observation-target factor; orbital test flight
st.exch., EU.	organised trading facility (Organised trading facilities (OTFs) are a type of European multilateral trading venue where contracts for the exchange of non-equities such as bonds, structured finance products, emission allowances or derivatives are formed. 'More)