ORF meaning in Space Science ?

Answer:

What is Orifice mean?

An orifice is any opening, mouth, hole or vent, as in a pipe, a plate, or a body

Body orifice, any opening in the body of a human or animalOrifice plate, a restriction used to measure flow or to control pressure or flow, sometimes given specialised names:Calibrated orifice, used to control pressure or flowRestrictive flow orifice, used to control flowMiss Shilling's orifice, used to control flow in the engines of early Spitfire and Hurricane fighter aeroplanesBack Orifice, a controversial computer program designed for remote system administration reference

Full Form	Category
Oceanic Resource Foundation	Academic & Science
Ontario Research Fund	Academic & Science
Office of Research Facilities	Business
Organizations Relief Fund	Business
Österreichischer RundFunk (Austrian Broadcasting)	Community
Ontario Renaissance Festival	Community
Oral Reading Fluency	Community
Opening Reading Frame	Community
Ohio Renaissance Festival	Community
?terreichischer RundFunk (Austrian Broadcasting)	Community
Outbound Route Filter	Computing
Olympus Raw Format	General
Observer Research Foundation	General
OTC Reporting Facility	General
Oblique Restriction Fragment	General
Olympus Raw File	General
Open Reading Frames	General
Option Response Function	General
Oesterreichischer Rundfunk und Fernsehen	International
Old Retired Fart	Jobs
Open Reading Frames in DNA sequences	Medical
Operational Readiness Float	Military and Defence
Open Reading Frame	Networking
Norfolk International Airport, Norfolk/ Virginia Beach/ Williamsburg, Virginia USA	Regional
Orifice	Space Science