trajectory

in reaction dynamics
https://doi.org/10.1351/goldbook.T06431
A path taken by a reaction system over
potential-energy (reaction) surface
or a diagram or mathematical description that represents that path. A trajectory can also be called a
reaction path
.
Source:
PAC, 1996, 68, 149. (A glossary of terms used in chemical kinetics, including reaction dynamics (IUPAC Recommendations 1996)) on page 189 [Terms] [Paper]