Term Name:	terminal cell fate specification, open tracheal system
Synonyms:	terminal cell fate specification
Definition:	The process in which a cell in an open tracheal system becomes capable of differentiating autonomously into a terminal cell in an environment that is neutral with respect to the developmental pathway; upon specification, the cell fate can be reversed. Terminal cells send long and bifurcated hollow branches toward target tissues to allow oxygen exchange.
Ontology:	GO: Biological Process [GO:0035154]    QuickGO    AmiGO