1) Ambiguous 2) Changing 3) Equivocal 4) Uncertain 
The term amphibolic is used to describe a biochemical pathway that involves both catabolism and anabolism. This term was proposed by B.Davis in 1961 to emphasise the dual metabolic role of such pathway. The citric acid cycle (The Krebs Cycle) is a good example of amphibolic pathway. The first reaction of the cycle, in which oxaloacetate (a four ca...
able to turn both backwards and forwards; double-jointed
• (a.) Of or resembling the mineral amphibole. • (a.) Of or pertaining to amphiboly; ambiguous; equivocal.
<biochemistry> Description of a pathway that functions not only to catabolise, but also to provide precursors for anabolic pathways ... (18 Nov 1997) ... 
Description of a pathway that functions not only in catabolism, but also to provide precursors for anabolic pathways.
Am`phi·bol'ic (ăm`fĭ*bŏl'ĭc) adjective 1. Of or pertaining to amphiboly; ambiguous; equivocal. 2. Of or resembling the mineral amphibole. 
Type: Term Pronunciation: am′fi-bol′ik Definitions: 1. Referring to reactions or biologic pathways that serve in both biosynthesis and degradation (anabolism and catabolism).
amphibolic Any of a large group of structurally similar hydrated double silicate minerals, such as hornblende, containing various combinations of sodium, calcium, magnesium, iron, and aluminum.
equivocal; uncertain; changing; ambiguous.