| Reptiloid | reptiloid |
| Reptil | reptile |
| Replik | reply replica |
| Republik | republic |
| repetitiv | repetitive |
| Septillion | septillion tredecillion |
| Peptid | peptide |
| Textilie | textiles |
| Epilog | epilogue |
| Epsilon | epsilon |
| Celluloid | celluloid |
| Zelluloid | celluloid |
| Keloid | keloid |
| Metalloid | metalloid |
| diploid | diploid |
| euploid | euploid |
| haploid | haploid |
| Actinoid | actinide actinoid |
| Opioid | opioid |
| Repetition | repetition |