| AAFC | Agriculture and Agri-Food Canada |
| AGC | Automatic gain control |
| ANOVA | Analysis of variance |
| ANR | Anthocyanidin reductase |
| BFT | Birdsfoot trefoil |
| CTs | Condensed tannins |
| DAM | Differentially accumulated metabolite |
| DDA | Data-dependent acquisition |
| HESI | Heated electrospray ionization |
| LAR | Leucoanthocyanidin reductase |
| LC-MS | Liquid chromatography–mass spectrometry |
| LSD | Least significant difference |
| MW | Molecular weight |
| PCs | Procyanidins |
| PC1 | Principal component 1 |
| PC2 | Principal component 2 |
| PCA | Principal component analysis |
| PDs | Prodelphinidins |