Liquids transforming into solids by the removal of heat.
Melting
D001359
Aviation
Design, development, manufacture, and operation of heavier-than-air AIRCRAFT.
Parachuting,Air Traffic Control,Control, Air Traffic,Traffic Control, Air
D013048
Specimen Handling
Procedures for collecting, preserving, and transporting of specimens sufficiently stable to provide accurate and precise results suitable for clinical interpretation.