Entries from:
PAC, 1996, 68, 149. A glossary of terms used in chemical kinetics, including reaction dynamics (IUPAC Recommendations 1996), doi:10.1351/pac199668010149
activated complexactivationactivation energy (Arrhenius activation energy)adiabaticadiabatic transition-state theoryadiabatic treatments of reaction ratesangular distributionArrhenius 
factorArrhenius equationatom–molecule complex mechanismattractive potential-energy surfaceattractive–mixed–repulsive
(AMR) classificationbeam-gas experimentsbond-energy-bond-order methodbranching ratioBrønsted relationcage effectcanonical rate constantcanonical variational transition-state theory
(CVTST)
catalystcatalytic coefficientcentrifugal barrierchain branchingchain carrierchain initiationchain length, 
chain reactionchain-propagating reactionchain-termination reactionchannelchaperonchemical activationchemical induction (coupling)chemiluminescencecol (saddle point)collinear reactioncollision cross-section, 
collision density, 
collision efficiency, 
collision frequency, 
collision numbercollision theorycompetitioncomplex mechanismcomplex reactioncomplex-mode reactioncomposite mechanismconventional transition-state theoryconventional true valuecouplingcritical energy (threshold energy)crossed molecular beamsde-energization efficiencydegenerate chain branchingdegree of activationdegree of inhibitiondensity of states, 
, 
detailed balancing (principle of)diabatic couplingdiffusion controldirect reactiondividing surfaceearly-downhill surfaceelastic collisionelastic scattering in reaction dynamicselementary reactionencounterencounter controlendergonic (or endoergic) reactionendothermic reactionenergized speciesenergy of activationenthalpy of activation,
entrance channelentropy of activation, 
equilibrium reactionexergonic (exoergic) reactionexit channelexothermic reactionextent of reaction, 
feedback in kineticsgeminate recombinationgeneral acid–base catalysisgeneralized transition-state theoryGibbs energy diagramGibbs energy of activation (standard free energy of activation),
Gibbs energy profilegradual (sudden) potential-energy surfacehalf life, 
heat capacity of activation, 
impact parameter, 
improved canonical variational transition-state theory
(ICVTST)
impulsive reactionindirect reactioninduction periodinelastic collisioninelastic scatteringinformation theoryinhibitioninitial (final) state correlationsinitiationinitiatorintermediateintrinsic activation energy,
isotope effectkinematicskinetic activity factorkinetic theory of collisionsLangmuir–Hinshelwood mechanismLangmuir–Rideal (Rideal–Eley) mechanismlate-downhill surfacelight-atom anomalyline-of-centres modelLondon–Eyring–Polanyi (LEP) methodLondon–Eyring–Polanyi–Sato (LEPS) methodmacroscopic diffusion controlmacroscopic kineticsMarcus–Coltrin pathMichaelis–Menten kineticsMichaelis–Menten mechanismmicrocanonical rate constantmicrocanonical variational transition-state theory
(µVTST)
microscopic diffusion control (encounter control)microscopic kineticsmicroscopic reversibility at equilibriumminimum density of states criterionminimum-energy reaction pathmixed energy releasemixing controlmodified Arrhenius equationmolecular beamsmolecular dynamicsmolecular kineticsmolecularitynegative feedbackNewton diagramnon-equilibrium reactionnonadiabaticnonadiabatic couplingorder of reaction,
oscillating reactionoverall activation energypartial microscopic diffusion control (encounter
control)
phase-space theoryphotochemical equivalencepositive feedbackpotential-energy profilepotential-energy (reaction) surfacepre-equilibrium (prior equilibrium)pre-exponential factor,
prior distribution,
productproduct state distributionpropagating reactionpseudo rate constantquantum yield,
quantum-mechanical tunnellingquasi-classical trajectory (QCT) methodquasi-equilibriumrate of consumption,
or
rate of conversion,
rate of disappearancerate of formation,
or
rate of reaction, 
rate-controlling steprate-determining step (rate-limiting step)reactantreaction barrierreaction coordinatereaction cross-section,
reaction dynamicsreaction intermediatereaction path degeneracyreaction probability,
reactive complexreactive scatteringreagentrebound reactionrelaxationrelaxation kineticsrelaxation timerepulsive potential-energy surfaceretarderRice–Ramsperger–Kassel (RRK) theoryRice–Ramsperger–Kassel–Marcus (RRKM) theorysaddle pointselectivityseparability assumptionspecific acid–base catalysisspectator-stripping reactionstate-to-state kineticsstatistical factorsteady state (stationary state)stepwise reactionsteric factorstoichiometric number, 
stoichiometrystripping reactionstrong collisionsudden potential-energy surfacesum of states,
surprisal analysissurprisal,
symmetry number,
temperature jumpthird bodythreshold energy,
trajectory in reaction dynamicstransient phase (induction period)transition speciestransition state theorytransmission coefficientvariational transition state theoryvibrationally adiabatic transition-state theoryvolume of activation,
weak collision 
