Terminology for Variation in Chromosome Numbers
| Term | Explanation |
| Aneuploidy | 2n ± x chromosomes |
| monosomy | 2n - 1 |
| trisomy | 2n + 1 |
| tetrasomy, pentasomy, etc. | 2n + 2, 2n + 3, etc. |
| Polyploidy | 3n, 4n, 5n…. |
| triploidy | 3n |
| tetraploidy, pentaploidy, etc | 4n, 5n, etc. |
| autopolyploidy | Multiples of the same genome |
| allopolyploidy | Multiples of different genomes |